I've tried to work with the MM 5 times now over the years, all after a long break and thinking "try it again".
I even bought and tried the Elevation Lab MagicGrips things (twice!)..
I want so badly to like an actual Apple mouse as the scrolling is totally awesome on there...
I'm done trying.
It's just simply not a comfortable mouse for me.
Somehow I ended up with a MM and MM2. They both cry out for use from my closet, where they sit ignored in their little white boxes. They are just too uncomfortable to hold for any length of time. Using Illustrator all day long they just aren't a good solution.