I'm like 80% agnostic 20% atheistic myself.
Both parties have a good unanswerable question (for now).
Atheists: if God exists, where does God come from? He can't have popped into existence knowing his purpose eternally.
Religious people: if God does not exist, where do we come from? Even if you explain the Big bang, even if you explain that what came before the Big bang and that before that, you still have to answer where that came from which either leads to an eternal path of questions, or simply, as our current situation: no answer.
1 does not come from 0, neither atheism nor religion can answer that.