Atheism is unreasonable

[Esquilax]

Infinity problem needs to be addressed and taken care of.

Not in, say, a cyclical universe. Or any number of other causal states that we can't even dream of, and you certainly can't rule out. Our minds work in linear time, even coming up with the vocabulary for other states of time is hard, but that doesn't mean that there's only two possibilities. If you don't know, and you don't have sufficient evidence, you are not justified in ruling out the possibility that the unknown unknowns involved in the scenario don't behave in ways you've never even considered.

That's why the smart answer right now is "we don't know," and the incorrect answer is "the universe had a beginning."