Well, to be honest with you, I think too much thinking and believes, make people loose on life.

 If we are honest with oneself, who knows? The purpose of life is having experiences. Why care if it will be long or not? Who cares? You don't know if you will be annoyed. Image life gives a girl you are never bored with ? Everything is possible!!!!
Why not just simply live?
 Take a chance, and accept how things go?
I mean, tomorrow we can be dead...
We have no control on life and the time we are here.
It's just "anti" life I think to not live, because we make stories in our mind that are far from reality.