Well, there are certain times when dragging the app to the trash doesn't cleanup everything, right?
My cisco vpn install (a GUI installer for an Aqua based app) wrote stuff into /System/Library/Startup Items
If I just drag my cisco vpn software application to the trash, does that stuff get cleaned up too?
That said, I'm still a huge fan of the Mac.
I will not return to Linux or Windows for my day to day desktop computing. I find myself more productive on a mac. To each his own...