Eh Linux isnt all its cracked up to be. Ya I'll admit I've got a copy on my sencondar HDD just as a backup. If I accidently screw something up in windows, just go fix it in Linux, and were back up and running. Now I will say as for server use, Unix just mops the floor with windows, however for a gamer, you cant use anything but MS. Mac, and Linux just don't have the support that Linux will ever.
Also for those of us who are a fan of the eye candy, MS all the way. (Me loves my object doc).
Cheers
Cameron