The Fear of Non-Existence

I was recently talking with someone religious about why I don't believe in a god. They eventually brought up the point "Isn't it just nicer to believe in an afterlife instead of nothing?" That got me thinking about the prospect of death. We have lived with it since we were single-celled organisms in the primordial soup. But we're inherently uncomfortable with it. This probably stems from a deep set evolutionary pressure to avoid things that could kill us. This fear is what I believe caused religion in the human race. In search of meaning and solace that death isn't permanent, we created a copout. I think the reason I personally don't find christianity a generally comforting idea is because I've put the deeper thought in and realised eternal life eventually turns into eternal torture through boredom. For that reason I find stifling nothingness more comforting. Nothing ever bothering you, no boredom, nothing. I think that's a core part of my atheism.