Apple's Magic Mouse

Yesterday I turned my Magic Mouse off and put it away.
Although it looks very nice, it gives me sore hands. It's just too small/flat!
I started using my "old" Microsoft Wireless Mouse 5000 again.

This mouse is a bigger and a lot more comfortable to hold.
Apple has such nice looking and easy to use equipment, why can't they design a comfortable mouse, instead of one that only looks good?

I don't think I'll be switching back to the Magic Mouse anytime soon.