1 + 1 = 2
That is logical. Humans can understand it.
Explode math to a large enough spectrum and we can understand things like t = 0.
In the same way, 0, by definition, is non-existant. It is logical, that something can equal 0, but when you look at something that exists before time, for example. You are literally saying that it's dimension of time is 0, or it
never existed. It's not really logical to say something can exist but never exist.
The concept of infinity is kind of the opposite. While it may kind of make sense to say something always existed, it doesn't really work in the human mind. Infinity minus any number is still infinity. So then if something existed before us, then infinity happened before now, so how did we get to now.
But things can't really exist finitely either. They would either have to come after something, which means infinity time. Or they came out of 0 time, so they came after nothing, or existed forever. You could say that they end, but if they don't begin then they exist infinitely before they end.