Atheists seem to assume that people who believe in God and an afterlife are mentally weak and gullible. Thereby assuming intellectual superiority over them.
Come on, man. Really? This is what you start with? An overgeneralization based on no evidence other than anecdote?
But have they considered what it means to really believe you are answerable to a higher power in everything you do?
Sometimes? I know some atheists who were raised very religious. I know some who weren't but studied religion. I know some who weren't and never cared to investigate much.
I was raised in a religious household, so I certainly have considered it.
Is it not easier and more comfortable to believe death brings oblivion, than to believe you are held accountable in an eternal afterlife?
I don't know. Being very, very close to death (my cardiologist referred me to hospice), I can tell you that my existentialism brings me very little comfort. Religion, which I have recently reconsidered, brought me very little comfort.
I don't find existentialism easy or comfortable. I find that the challenges of life are exactly as challenging. I'm not sure what part of school shooter drills at my kids' schools, Covid-19, or filling out tax forms would get easier one way or the other.
I've often envied people who find peace with difficult situations through faith. That, to me, seems easier. However, maybe they just are people capable of finding peace no matter what they might believe. I've seen Muslims, Hindus, Christians, Jews, and Shintoists ground themselves with faith. I've seen atheists who handle stress far more calmly than I. Collect some data and get back to me.