But I run it all:
5 licenses of XP Pro SP3 (old laptop, main desktop, netbook, older desktop, something I'm forgetting),
1 license Win 7 Home Premium (new laptop, to avoid win8 atrocity),
1 license Vista Business (argh),
1 Xubuntu install (small file server/dev box),
1 Ubuntu install (old laptop),
1 Boxee Box (linux),
1 WAP (linux),
Android 4.3 Tablet (nexus 7),
Android 4.4 Phone (nexus 4),
Android 4.1 Tablet (asus transformer prime),
1 Win95 box (older desktop),
1 WinNT 4.0 box (older desktop),
One of these once had a triple boot with XP or 95 alongside OS/2 2.1 and Yggdrasil Linux....
I'd love to migrate my XP boxes to Win 7 but Win 7 pricing is *still* stupid. And I'm vague on whether the laptop and even the desktops would have full drivers for all of the older stuff. Win 8+ is an atrocity - I can't say how much I hate METRO. Even in XP, I switched to the classic NT look.
Because of my disdain for Metro and Win 8, I may well end up with more Linux boxes. Ubuntu or Xubuntu, although a BSD might be tempting too. I've used RHEL at work and it isn't bad either.
My issue is I have so much software from small producers that I like that only runs on XP (and some of it actually requires kernel hacks - one DB fix in particular - that I am unconvinced will work on a virtualization platform) that I feel I'll have to keep some XP boxes up and running.
I rather hate the fact that I need nothing (except security updates) from Win7 or Win8 and once again I've had to relearn where all the admin tools are and so on (just like every Windows release) and I'm going to have to rebuy a bunch of apps that cost $$$ that work fine for me on XP on the new platform for no increase in utility.
Ubuntu is good and the apps are okay, but honestly they just don't match up to what the MS office apps (for instance) can do. I've tried libre office, star office, and a number of other products. They just aren't as easy to use nor as capable as MS products IMO.
The only compelling reasons to migrate forward are professional experience with the new OSes (most like teeth pulling) and security (given XP security updates are coming to an end... you'd have thought MS could out source this and charge some $ to keep security updates coming for a few more years, but they want you to migrate.
But being on Linux is no protection from changes of a major nature (Unity appearing in Ubuntu as one example). Every platform, even the free ones, if you want to keep up with current levels of software for compatibility and security, you have to take all the other UI changes, repackagings, deprecations, and additions. It's the miserable cost of staying current.
No, I'm not a luddite. I just know that XP gave me functionally pretty much everything I've needed as a professional, small office user, and heavy internet user/developer. Security could have been better (no doubt), but the truth is what Win7 and WIn8 have added has been of little utility to me and therefore is primarily an annoyance. And Chromebook sure isn't a substitute, nor is MacOS.