Let's see:
Religions are bullshit, all of them, just read a "holy book" or 2, they're nonsense.
I don't know whether a god exists but there's no such thing as omnipotent/omnipresent/omniscient.
If the universe was a conscious creation, it was probably created by scientists, not a wizard.
Even if a god in the way we think of it exists, there is no afterlife because why the fuck would god want to be pestered by souls of hairless apes for all eternity? What does god get out of there being an afterlife? The answer is "nothing" unless he's harvesting souls for energy or food but if that's the case, there's still no afterlife because we either get eaten or burned.
I have this fun hypothesis I came up with a long time ago:
If you look at an atom, it's a big ball with smaller balls travelling around it, that's a lot like a a solar system.
What if a solar system is an atom, a galaxy is a cell, a cluster of galaxies is an organ and the universe is just 1 living thing?
The universe is expanding because the thing is still going through it's growth period, it takes billions of years for us but for that thing, it's not nearly as long, just like our cells go through thousands of generations throughout our lives.
Black holes are essentially cancer which eats healthy cells.
This can also go the other way::
What if our cells are galaxies?
What if, whenever your stomach aches, there's an intergalactic war going on inside you?
What if viruses are really highly advanced civilizations which invade a living thing, mine for resources and move on to another living thing?
I can't prove any of this but, as far as I can tell, nobody can disprove it either and it makes a lot more sense than any religion I can think of.