I can see the 3D alright. However, it rarely brings anything worthy to the experience, and generally, I stop even noticing it after about 5 minutes. After that, I'm just annoyed at having to wear the stupid glasses. Every time I've done so (at long intervals), I've thought to myself "Oh, right. That's why it's been so long since I went to see a movie in 3D". As a result, I've stopped going to 3D screenings of movies altogether.
Another issue with 3D movies is subtitles. Probably only other Scandinavians will know about this, because English speakers don't use them for Hollywood movies (which are generally the only ones that come in 3D), and most of the rest of the world dubs them into their own language. In Scandinavia, only movies targeted at children are dubbed.
Allow me to explain. In 3D movies here, the subtitles are also subject to the 3D effect, so they seem to float about a meter in front of the screen (depending on the size of the screen, of course). However, when something in the foreground of the picture is closer to the camera than the distance the subtitles are set at, you get a weird spatial effect which really screws up your eyes. They refuse to focus on the subtitles because they can't figure out how far away they are. This is because they are superimposed "in front of" something that is actually closer to you than they are.
Oh good lord, just thinking about that makes my eyes hurt.