3D gives me a headache. It also looks rubbish. I watched Gravity in 3D after Mark Kermode admitted it added something. It was bearable because it was a concise film and was enjoyable. But it works only in specific cases like these. It's more like a theme park ride than something that works on any film. Other times I was forced to watch 3D were: Dredd (only available in 3D), The Hobbit (was curious about 60fps which was only available in 3D). I regretted it each time.