It seems like suicide is a way to escape the silence, being alone with our inner self that we hate so much. We're so caught up with doing, so absorbed in the material, that we don't know how to just be, and that's what frightens people into considering suicide.
It's funny, I was just watching Dr. Wayne Dyer on PBS right now, great guy. One of the things he said was "give up your past", embrace it, learn from it, understand it, and then throw it away. All the things we've experienced in life are what we had to go through to get where we are now. If you stop living in the past and start living in the now, you'll realize that the sky is the limit and suicide is beyond even considering.