I think about it a lot but never seriously, just because everything feels better if there's a way out. It doesn't mean that you are going to or want to use it. I don't know what I'd do if my family wasn't around though.
What scares me more is that I know I'm too scared to actually do anything like that, which means that the escape route isn't there any more. It's nice to have the thought of that escape route there, to keep you from going crazy, you know?
Having said that, I always wonder if I'm ever going to reach my next birthday.