Why do Athiests require 'proof' that God exists?

[genkaus]

There are some things we cannot prove.

For example one cannot prove ones own existence - I could argue that you are a figment of my imagination, like a person in a dream. You would be unable to prove that you were a self aware, autonomous human being.

Using atheist logic I should therefore consider all other humans to not be self aware, sentient, concious beings as they cannot 'prove' they have these qualities.

Would it not be better to accept that I can never know if other people are self aware like me? That I can never know if God exists or not?

Ofcourse we can prove that. Come over here and I'll slap you upside on the head. I'm willing to give this proof to you as many times and for as long as it takes to convince you.