Nope. I like using my thumb much better than my pinky to hit the modifiers. I have long fingers so it's easier to curl my thumb under than squeezing my pinky in. Plus, that way I can leave my thumb on command while I'm working and hit any other key on the keyboard.
Maybe you're used to the pinky version and like it?
Yea its just another habit. When you're used to macs after a while you're going to hate windows position everytime you hit alt+c instead of ctrl to copy things.
The Finder is the main and only thing I dislike in OS X. I hear it's getting an update in 10.6 that's great.
I like everything else