Which OS do you use, and why do you use it?

[Tripredacus]

I'm amazed that a lot of you use multiple operating systems. Doesn't that drive you crazy?

For me it is because of work. I only posted my "personal" systems, although I do use the netbook at work. So if I wanted to post everything I've got running at the moment here at work:

Windows 7 Pro x86
Windows 7 Pro x64 x2 (on VMWare ESXi)
2x Server 2008 R2
Server 2012
Windows 8 Release Preview

[Bones Justice]

For me it is because of work. I only posted my "personal" systems, although I do use the netbook at work.

Yeah, my work environment is crazy about computer stuff, too. Because of a long-standing contract dispute, we cannot use our own computers on the job but cell phones are allowed. Over the years, cell phones have become as capable as any other computer so we use them instead of laptops. With the right accessories, a cell phone is practically the same as a laptop computer anyways; at least, mine is.