I always hear about people "switching" from one platform to another. Why bother? I've never switched from one thing to another.
I have:
PowerMac
2 Power Books
2 Mac minis ( one running ubuntu)
1 Vista machine
2 XP machines
3 Linux machines
Are people really so dense that they think they have to completely use only one platform or another? Are people so dense that they get hung up on the number of buttons on the mouse or location of crap to click on to get some place or keyboard shortcuts?