I have no problem with 3D. I don't get headaches, the glasses don't annoy me and it can be fun.
But for some reason I still watch 2D first in most movies. In the rare cases I might go see it more than once I check out the 3D version.
On top of how uncomfortable they are, they're dirty! Yuck.
Dirty? Don't the theaters give you new, sealed ones before going in?