I don't believe nor I disbelieve in god, being an agnostic, and I try to not make assumptions about the existence of souls as well, since there's no proof that they exist and no proof that they don't exist but yes, it can be scary for me to think about the possibility of going to hell or reincarnating. That's not going to stop me from killing myself, though, as I made the conclusion that, just like you can't cheat death, you can't escape from what comes next, be it the oblivion I seek or some sort of afterlife. It's inevitable, and it's uncertain, so why overthink it in this lifetime? If there's a chance that I will get what I seek (eternal oblivion), I'm going to take it. It's better than living in this world, and I'm confident about my chances as I'm leaning towards atheism most of the time.