If it looked like there was no hope of living and I was going to be going through hell should I let myself live a little long, yeah I would take my life. It depends on how I would be able too. If I had a gun or a sharp weapon, I would use that, or if I could use a poison capsule. But if it realied upon me using some method that wasn't as quick or painless, then I won't try. Although martyring myself is also another reason why I would do it.
Normally though I wouldn't turn to suicide. I only see it as a last-ditch effort to avoid stuff like torture or a horrible existance.
Edit: And to those who say that suicide is for the weak. No it's not. Who's the one who's to afraid to take their own life, hmm? You are. You're too afraid of what might be waiting on the other side. These people have the courage to take their own life in sometimes very painful ways, so that others won't be hurt. That's pretty damn brave if you ask me.