Hey I have an interesting question for atheists tell me what you think?
the matter that was working together to be "you" decided to stop working together. No matter was lost from the universe and no soul left your body when you "died", which you believe because you are atheists. Nothing changed except all the cells decided to stop working together and went off to do their own thing. Knowing all this what would you define death as exactly? the moment when all the cells making up you just stop working together? Also why would you be afraid of this as everything that made you up still exists in the universe? Is it just the human survival instinct? Also following all of this doesnt Buddhism seem much more likely, because the matter that made up your body is reused in other living beings and "reborn"?
I myself am a christian and I believe that our soul unifies the cells in our body to make us more than just a community of little cells, but assuming the opposite of that leads to interesting ideas.