The Best Tool For the Job
Have a Mac Laptop, an XP box and a Linux box, and a windows based PDA/smartphone. spend most of thier time on the Mac for e-mail/web/office/ssh client/java development, run games windows spesific apps and test on the XP box. Use the linux box for server apps and *nix tools that arn't on OS X just yet. Don't have a religous fanatism to any OS and belive the ability to "get stuff done" is the main reason for owning a computer.
What Type of Windows Weenie Are You?