1) need to run windows 7. Comes on a DVD...
Get an external drive. How many times a month do you plan to install Windows? Sure, back in win2000 and xp days I used to have to reinstall every 3 months, but I believe that things have improved now.
2) want legacy MS Office for Mac. Comes on a DVD...
You can download it from MS and enter your serial or use an external drive. How often are you planning to reinstall? You could image the DVD and keep it on an install hard drive. To protect yourself against data loss, make a backup of this onto another drive. DVDs can scratch and also deteriorate over time.
3) I may have a virus / trojan. Will infect any writeable backup media but not a backup on a DVD...
A virus will only infect executable files, not your precious memories. Since you're talking about people's media this point is moot. A virus / Trojan cannot do anything to your photos or other media. You cannot backup your installed applications to a DVD. So when you mention writeable backup media, you must be talking about using an external hard drive to backup media and not applications. A virus will not do anything to this data.
4) have a CD with some scratches. Need to make a backup before I cannot read it any more.....
Yep, those pesky CDs and DVDs do get scratched and they even deteriorate over time. This is exacerbated if you live in a humid climate. I would urge you to image them to an enterprise hard drive, if the data is critical.
and how many people have lost their pictures or music because of a virus
No one, unless you're talking about an old school virus from two decades ago or so that would attempt to destroy the data on your hard drive. These days such things do not exist. Viruses only infect executable files. They cannot infect your media. They are designed to make money by stealing your info or make your computer join a botnet. They won't harm your precious memories or music. Again, get an external drive or a NAS solution and store your media there. Always have a backup. A virus cannot damage your backed up media on an external drive.
If the external disk is the only place that you have, then make a backup of that. It's safer than physical media. What about those people that have far more precious memories and other media than you can imagine? Do you really think I should try to backup 4 TBs ( WITH A T and growing) of data onto DVD discs? Or even BR discs?
Hard drives crash, DVD discs deteriorate, planes fall out of the sky. These things happen. You need to lower the risk of this scenario happening. Keep multiple backups and use enterprise grade hard drives if it's really important. Off-site tape storage for mission critical stuff. It works for enterprises so it will work for you. The nice thing is that you can recover your data from a faulty HDD in most instances. I am not aware of consumer services that will allow you to recover data from a broken or badly scratched DVD.
You may be able to download the iTunes music again but how about the music that was ripped from CD, how are you going to re-rip it....
I would plug in my external BR drive and restore my music again, if I was silly to forget to back it up to an external drive. Or I would connect my backup HDD and restore it.
What about those precious pictures that you have no physical media for........
Your precious pictures can be backed up to a cloud-based solution and to an external drive.
and what about those countries where they have no broadband? (or no broadband outside the main centres....)
and what about those countries where the broadband is capped at 3 Gb / month......
What about them? Which countries would those be? I've lived in Africa and even there they don't have 3 GB caps.
There is still a very valid use for the DVD/CD, not having one build in is a killer for me.... (this is why I did not have any interest in the server) I can understand from a business perspective the push to iTunes but it might backfire badly. At one stage CD sales dropped completely away but after several people have lost their whole music collection (lost iPod etc) the CD sales have gone up again. Shees wonder why....
Do you have any proof of this other than your anecdotal evidence? CD sales are dwindling, no matter how much you deny this. DVD sales are still holding their own against streaming media.
If you do not want to use it than that's fine. If it is not in the ultra light laptops that's fine. But no excuse for not having it in a desktop or in the desktop' replacement laptops.
Just use an external DVD drive. Considering the mini's size I can see plenty of logical reasons to remove it. I can also see Apple's strategy. If you don't agree with it, no one is holding you back to stay on the train.
You'll find that those who have been around longer than just a few years still do not trust writeable media for backup.
Who are these people besides you? Do you wear a tin foil hat as well? We used writeable media for backups long before DVDs and CDs and managed to survive. For how long have you been around? Not long enough, I guess? Corporations do not backup to DVD discs.
Oh yes, you rely on anti virus / anti malware software but that very software slows the computer down by HOW MUCH???!!!!!! Some of us cannot afford that slowdown! (i've got a special database and write more than a billion (with a B) records per hour.....
I actually laughed because I pictured DR Evil saying, "One billion dollars!". One billion records per hour? That is nearly 27,778 records per second. How big are these records since I do wonder how your current mac mini core 2 duo manages to run this special database, write DVDs, rip music and still allow you to surf the Internet? I thought that you couldn't afford any slowdowns? That's quite impressive indeed. What makes this database special?
You can protect whatever you want but if there is a lightning strike close by then everything electric may be fried in your home. You'll be o so glad you had those pictures on a DVD....
Moot point. Have you ever heard of a proper backup strategy? Why would you keep your backup powered on all the time? Imagine what would happen to your precious photos if you didn't have a backup strategy with offsite storage? If your house caught on fire, then it would be all gone, including your discs. Hence why a proper backup strategy is important.
You could, of course, have bought an external DVD drive and burnt discs all night long, but I have better things to do.