Do humans always accept proofs when presented to them?

[robvalue]

People who are scientifically minded will generally say evidence. Proof is not something science deals with. But people may have used it informally to mean evidence.

I'm sure people have said if there was good evidence, most sceptics would believe it. That is indeed true. I've not seen any credible evidence.

As I said, if you're talking about proof, you're saying God is abstract.

But seriously, until you have a coherent definition, it's all moot. Theists do not all mean the same thing, clearly.