Most 3D is very subtle and lacks much depth. It's even worse when it's a post conversion. If I'm watching a movie and I have to struggle to even see the 3D, why would I bother? I'll only put up with the glasses and the darker image if the 3D really pops. Avatar, Coraline, Beowulf and The Polar Express were pretty good at that. Most other 3D movies, not so much.
That being said, I do own a 3D TV and projector and I still like to check out the handful of better 3D movies out there, from time to time. IMO, it's not worth watching on a TV, even a 65". It's a much better experience on a large screen that fills your view.