Hmm.. personally I will always go for the 3D version if it's available for a movie I want to see, because the better immersion is worth paying the premium for in my opinion. I'm not a regular at cinemas, so if I go it's because I really want to watch that movie in the best possible way (recent exception is Avatar, which I wanted to watch because it's 3D and not because I was interested in the movie, which turned out to be quite entertaining, but just as "flat" as I thought it'd be), which for me is 3D right now.
As he says there are some technical difficulties directors run into when making a 3D movie, but I think they will manage to handle these in the end. That won't destroy "serious, mature" movies, just like color or sound didn't destroy them.
