Ummm I just wonder why photographers prefer Mac or OS X for photography career? Every places I visited have at least iMac or Macbook pro for working. For me, I have a bad experiences with Window 10 that I have to format everything because the system is really unstable.
Personally, I don't see any advantages in performance but why? Any reasons such as color profile or?
if you ask in a mac forum already know what the answer will be, same thing will happen if you ask in a Windows one.
I use all three (Windows, Linux and Mac) on a daily basis, for home and work usage. Photography on a Mac will probably will cost you more but out of the box, you will have a superb display (Macbook, rMBP or iMac). The color calibration is usually not too far off. My personal experience with the Mac in general is that you actually put more time using your software than managing the computer or operating system that comes with it. Everything works nice, the software that they give you are great and you can work as soon as you get it. On a PC, your first job is to actually clean the bloatware that comes with it, remove trial version, get working (paid version) of basic softwares that you need and then make sure you have a working backup. The Windows 10 backup focus more on your documents, so make sure you have a system recovery disk also created.
A few years ago, I had an analog camera that I plugged into the PC, nothing happened. I had to find a software to rip and convert the media. So far, it's not unusual. I plugged the same camera into the mac. I had a popup asking me If I wanted the tape to be rewinded and proceed with the conversion. I was on the desktop, I just had to plug the camera and a one click operation did everything. It was doing that with the built-in softwares that came with the mac (iMac 2008, at the time). I also had positives experiences with TimeMachine backup, Mail, Calendar and many more.
I'm sure there are more stories like that around the web. Both OS looks similar when you look at screenshots or play with them for 5 minutes. When you start working with them, it's a different story.
If you stick to mac store apps, they will all be kept to the latest versions automatically. It's the same for Windows, but I don't know anyone that bought a single app from the store. Everybody I know use non-universal applications.
I have a 4k screen on my Windows box, I can tell you there is still a scaling issue that blurs the fonts when you don't use universal applications. If you're not in the 1:1 pixel ratio, as soon as you use 125,150% (150% being the default), 95% of the applications I use don't render fonts correctly. I sometime use the 1:1 mode to make the problem go away but it's hard on the eyes! Same display connected to the macbook works perfectly fine.