A lot of people also can't see 3D, I am one. For the longest time, I never understood people liking 3D because it always looks like total crap to me, just a bunch of colored lined images that look horrible.
It was only a few years ago that I really realized that it's me, when my wife, daughter and me were in Wal Mart and they had a display setup switching from normal TV to 3D, back and forth. To them, the 3D looked great whenever it switched to it, to me, it was absolutely and totally un-watchable. My daughter looked it up online and there's millions of people who can't see 3D correctly, it seems.
If 3D ever becomes the standard and there's nothing but 3D to watch, I won't be watching much TV, or buying any new TV's.