Religious belief or disbelief isn’t really a big deal. After all, religion and atheism are only matters of opinion.
Agnosticism is a half answer
Does God exist? How can we quantify the something that’s allegedly infinite? It’s not a testable claim.
Agnosticism, however, is about what we can know or not know for a fact. But you don’t have to know to believe or disbelieve.
Science doesn’t settle the question
Each perspective has its strengths and weaknesses. The improbability of our life sustaining universe is a serious objection to atheism. Speculations such as multiple universes, where the improbable would become inevitable, are unproven. Ideas like our universe being a simulation are even less satisfying. Who created the simulation? An alien from another universe? Who created that alien?
But then, who created God? And who created the one who created God?
It’s enough to make your head spin.
Proving the multiverse exists wouldn’t settle the debate, though. Who created the multiverse? Besides, true believers already reject evolution and would reject any new scientific evidence.
Faith doesn’t answer the question
At least science is about testing propositions, not asserting opinions. But religions often prohibit tests of their doctrines.
If God exists there’s the question of what God is like. That’s where revelation and sacred texts, which are based on someone’s personal experiences, enter the picture.
I can’t deny your personal experience because it doesn’t belong to me. But because it doesn’t belong to me I can’t accept your experience as the basis of my belief. Instead I accept that it’s your perspective.
But for your or my experience to be accepted as fact requires empirical verification under strictly controlled conditions that must then be independently verified.
Besides, personal experiences and religious texts vary wildly. How you can be so certain – even to the point of condemning others – is a question anyone must answer if they’re going to claim their beliefs are facts.
Further, Christians often say the Bible is inerrant. Yet biblical contradictions are numerous. The Bible also justifies slavery and orders women to marry their rapists. So it’s reasonable to question the claim that the Bible is the word of a perfectly good deity.
Our flawed world raises more questions about God (if he exists)
The belief that God can do anything has its problems. The universe appears to work a certain way, and there are no verified instances of the laws of nature being violated. Miracles where the laws of nature are suspended either rely on hearsay or turn out to be false when rigorously tested. Atheists like to point out that amputees never regrow limbs no matter how hard they pray.
It’s not unreasonable to say God (if he exists) either won’t or can’t suspend the laws of nature. If God can’t then he’s not omnipotent. If he won’t then he’s not perfectly good.
On top of that, the design of the world could be better. Birth defects are an obvious example. Or the fact that it’s easy to choke on food or for women to develop fistulas after childbirth when a better design would prevent these raises serious questions about the omnipotence of the Designer.
But is it worth believing in a God who is not all-powerful even if he’s more powerful than anyone else? For some, yes. For others, no. It depends on your opinion.