should I stay or should go?

What should you do when you see a show that you hate? Last night I saw a show that I hated from the first five minutes. I wanted to go almost straight away and it was agony to stay there. My neighbour who I didn't know, turned to me after about 20 minutes and said, "Did we pay for this?" He left in the interval, I and the person I went with, stayed. It's hard to make theatre and there's plenty to learn from watching a show you don't enjoy. But it is torture somehow. You can't do anything else. At least on the tube I can read a book or listen to music or just look at people. But the rest of the audience loved it. In fact they gave it a standing ovation. I guess it was worth staying to see that.