Attn: Theists - What would it take to prove you wrong?

[Darwinian]

So if I were to say you can't go north of the north pole that would be a baseless assumption? Try to engage your brain and think a bit.

Actually, without realising it, you have given a very good analogy of the universe having no beginning.

Just as you can't go any further north from the north pole, as you would just start going south again, you can't go any further back in time once you reach the big bang as you would simply start going forward again.

A universe with no beginning, there being no time in order for the beginning to start, needs no creator.