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the whole installing an app downloaded from the internet routine.

Mounting, dragging into applications folder, then ejecting the disk.

I've used a mac for over 3 years now, and it still bugs me.

+1 It is so unnecessary. I hope though that all apps move to app store.
 
The whole installing an app downloaded from the internet routine.

Mounting, dragging into applications folder, then ejecting the disk.

I've used a Mac for over 3 years now, and it still bugs me.

I agree, but the fault of that lies on the developer. Some smart developers (like Dropbox) automatically delete the disk image after installing.

OS X wouldn't automatically eject/delete the image after install, because the image could also include other files that is needed. If OS X did delete/eject installation images automatically, people would be in an uproar and saying Apple is being too controlling. There's nothing wrong with Apple's behavior; the choice is up to the developer.
 
My next hate for the MacOSX is about the social media stuff, that too is all over the place. Can I have an option to delete every single one of those?

I think Yosemite turned Twitter, Facebook and LinkedIn into extensions. So whenever you click on the share button, they shouldn’t appear anymore, unless you have enabled the corresponding extension. I don’t like how the share button lists Twitter, even though I don’t have a Twitter account. But that should be a thing of the past with Yosemite.

Just imagine that stupid resize windows from all sides. I hated it so much. Just yesterday I thought one app window is obstructing my view of another app, so I clicked somewhere on the sides to move it away so that I can have a clear view from both apps. Instead of moving it away, it gets resized even wider, blocking the entire view... :mad: I would prefer to resize windows from one corner alone - Bottom Left Corner...

I never understood that criticism and I don’t understand your example. When were you able to drag windows by clicking the sides? I think that only ever worked on the toolbar. To me, that one-corner resizing was inefficient. You had to move the window first in order to resize it effectively. Now you can just drag in any direction you want. It makes so much more sense to me, but I understand that it may not be what you want.

The whole installing an app downloaded from the internet routine.

Mounting, dragging into applications folder, then ejecting the disk.

I've used a Mac for over 3 years now, and it still bugs me.

Don’t forget the last step: deleting the disk image. Moreover: if you open the disk image from, say, the downloads folder in the Dock, you have to open another Finder window in order to drag the application to the Applications folder (unless the disk image has an alias). I made a workflow using Automator to speed this up, but it should be something OS X does out of the box.

+1 It is so unnecessary. I hope though that all apps move to app store.

I hate that Apple is so restrictive with the App Store. Most of my apps are not available on it, because Apple imposes sandboxing limitations. It works so beautifully on Linux where you can add your own repositories to your application manager. It’s not really fair that Apple keeps the updating mechanism of its own non-App Store apps to itself. iTunes and Safari can be updated through the App Store, although they are not on there.


My dislikes:

I am annoyed by the Finder tabs. I barely use them, because the OS won’t open folders in new tabs by default. I regularly open folders from the Dock and they always open in a new window. There is no overriding shortcut, it seems. Very pointless and confusing to me. It wouldn’t surprise me if uninformed users would ever find out about tabs.

Another thing that bothers me is the Notification Centre. My sentiment is between: don’t need it at all (the Dock covers most things) or could be so much better. Specifically, I miss a visual indicator that shows me whether I have new notifications in the Notification Centre.

QuickTime. I can’t count the times where it was utterly useless because of missing codecs. I used to have Perian installed before it was discontinued and fully working. Now I’m just using VLC for everything, but it doesn’t work with Quick Look. I also don’t like VLC so much, I had to tweak it quite a bit until it was good enough.

There is an annoying bug in Finder column view where the scrolling is interrupted all the time. It doesn’t appear to be fixed in Yosemite, which is a huge disappointment. Overall, I notice that OS X has many little bugs and glitches everywhere that annoy me.
 
Finder is definitely the weak link, and is missing basic functions that Windows Explorer have had for 15-20 years! (Comparing the size of several folders into one window, getting a detailed view of files in a folder's various subfolders etc.)
 
Finder and Dock so many small functional things missing compared to Windows' Explorer and Dock.
 
I'm still not a fan of the grey sidebar, and in Yosemite, it looks even greyer. Same for the menu bar and scrollbars. It's too bad Apple keeps removing colors. I prefer the Aqua scrollbars still, even after using 10.7-10.10.
 
No more quicklook support for avis, mkvs, etc. It's been years now since pertain was abandoned and nothing has replaced it. A bit embarrassing for the mac community. I can't code so can't help out unfortunately.
 
I hate how the MacOSX has grown into a mere consumer's product.
Only this morning, a message pops up my screen saying there's an update. Should I do it now or later? Not even a "More Info" button?...

...My next hate for the MacOSX is about the social media stuff, that too is all over the place. Can I have an option to delete every single one of those?

Click on the Notification icon (anywhere in the space except the two buttons), and you'll be taken to the App Store where more details are provided.

Social media options in Share Sheets/Share tabs can easily be turned off in the System Preferences > Internet Accounts, where they are also removed from view entirely.
 
Click on the Notification icon (anywhere in the space except the two buttons), and you'll be taken to the App Store where more details are provided.

Social media options in Share Sheets/Share tabs can easily be turned off in the System Preferences > Internet Accounts, where they are also removed from view entirely.

Only on Yosemite. I don’t have a Twitter account, but it still shows up everywhere.
 
Finder lacks the most

1. finder, so century old, lacks even the simplest operations compared to Windows!
2. Preview, Beachballs very often with lot of jpgs, and if you have only one file selected, you don't can go to the next file preview, like on Windows!
3. information on files, please show exif information directly
4. no NTFS write support (officially), come on Apple, we are in 2014!
5. renaming files lacks
6. modern video codecs playback without VLC
7. please concentrat on i m p o r t a n t things, not gimmicks!
 
No NTFS write support. That leaves only exFAT and FAT32 as the common write-supported file systems with Windows. Both are not generally going to be used on external hard drives.

Sleep doesn't work that well. I often put my computer to sleep in OSX and return a few hours later to find that it has woken up. In bootcamp with Windows 8, it tends to stay sleeping.
 
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