Without afterlife, life itself has no meaning for me. I think that we are more than mere vegetables. I cannot really explain it, but I think that life is just part of a cycle, and that something is waiting beyond death.<quoted text>Now this is a far more reasonable point of view. However, why you see no sense in your life if there is no meaningful afterlife seems odd to me.
It seems most healthy to be reasonably sceptical and believe nothing beyond what can be justified by reason and evidence, but you offer one motive for doing otherwise. Assumptions about gods and aferlives are not always so benign. I think many suicide bombers are partly motivated by the belief in afterlife rewards, as if all the injustices they feel they see can be put right in a later 'life'.
If you wait for it to be justified by reason and evidence, fine. But I think you will be waiting for ever whilst I am ready to take a leap of faith and believe in it. That's the difference between an atheist and a believer.
Now, not all believers are suicide bombers!