I'm torn with the whole operating system thing too.
I don't like Vista, for example. HATE it, is a better word....I don't like the security features, or how much overhead is needed by the OS.
But, it's the only OS set up for DirectX10 hardware, and if you having seen what it can do, Youtube it.
I don't like Macs because its harder to get some of the software I love for them. I don't mind the interface, or system itself. I actually like it a bit. But, I'm a gamer and I have a shitload of software for PCs. Mac, for that reason... is out.
Linux, I like because of the lack of overhead and flexibility... but you know what... I want to plug something in and have it work. I want my OS to be incredibly simple so I can just turn it on and do what I want it to do.
Unfortunately, I'll probably go Vista when I get a new desktop because of DX10 and it will be hard to find XP (which I don't mind that much) once I get a new desktop in a few months...
A new OS has to come out that supports DX10, PC software, has very nice, adjustable security software and won't require 100 updates a month to keep it working.
I leveled finally, hurray!