That's how it goes. You think it's gonna be one thing, then it turns out to be another. You think it's gonna be bad, turns out better than you thought. You think it's gonna be good, turns out worse than you expected.
You end up doing things you didn't think you'd do. This can be an eye-opening thing. Maybe broadens your horizons. Or you think, "Never Again!" We are all trapped. By circumstance. By time. By biology. Sometimes being trapped is actually a good thing. Sometimes not. And really there is no escape.
You want to escape. But escaping just means accepting a new set of conditions. I think it's best to choose the things you do, and the people you spend time with, wisely. Very carefully and wisely. Of course, you won't know what is wise until it's too late, one way or the other.