You just shrug and ask if the question of god(s) is even a relevant one to a bunch of meat hurtling from birth to death. This obviously doesn’t work if you subscribe to a particular religion, because they tied to claim the imposition of existential penalties for this kind of thing, but assuming you’ve already concluded that religion is definitely a human invention separate from the “god” question, that presents no obstacle. After all, if there isn’t a god, gods, afterlife and so forth, it’s a waste of time to worry about it. If there is a god, gods, afterlife and so forth, then could we ever know for sure? Could we hope to understand it and are we really so full of ourselves that we think worship is important?
For me the answer is “no” let’s get on with life, and leave what (if anything) comes later. If other people feel differently, that’s fine. Plus I get to avoid a lot of boring debates and arguments between tribes of people who seriously think their ancestors figured out the secrets of the universe.