Ctrl-click...
Though I rarely find that I need to get a context menu on OS X, most things are just there or access by keyboard shortcuts.

Control-click even.

That's exactly the reason that right click is there

As someone who lives in front of a Mac, my left hand sits hovering over the modifier keys most of the time. I've even developed a kind of claw effect! So, hitting control is no problem while working, as it's in the same group as shift, option and command. Which is why I never needed a multi-button rodent.

I have grown accustomed to it now, and miss the scroll ball when I'm at home.

+1

I do like my Logitech mice.