yeah I'd agree with that. I've seen some films were it was crucial, e.g. Avatar - story not great effects fantastic. Then again I've seen films like "How to train your dragon" which was a really nice story and I thought the 3D added an extra bit to it. The of course there was "clash of the titans" which was s**t all round and the 3D was just distracting. I think it helps if it was recorded or rendered in 3D afterwards. Still, yeah, does seem like a way of making crap and using 3D to make it more impressive.
I don't see that I'd ever want one at home / those glasses wont work while I like down as of course they are dependent on the viewing angle.