I'll agree with you, I personally hate the Mighty Mouse. Right-clicking is a pain and the thing just doesn't feel good in my hand. I would take any Logitech, or even Microsoft, mouse over the Mighty Mouse any day.
Seems to me that this is one thing where Apple cared more about form than function. Then again, Apple hasn't exactly been that great when it comes to mouse designs (i.e. the puck mouse)