I too have never understood how the scroll wheel could be considered intuitive. The first time I saw one I was somewhat baffled until my friend showed it to me and even then it was always a struggle to control.
Intuitive (to me) would be the scrolling on other players...hit up it goes up one, hold up and it goes up increasingly fast. Maybe that's boring but it's completely obvious how to work it when you pick it up.
It was only 'intuitive' if someone showed you how to use it, which means... it wasn't intuitive.
They dropped that interface element quickly enough.