Atheists,by denying God and angels are u saying mankind is the most intelligent being in the whole existance?

I don't deny god, I just don't believe in any gods, he's more than welcome to prove himself to me but he hasn't and he's had plenty of time to do so, and yes, I am quite certain that aliens exist somewhere in the universe, just not here and I don't think the most intelligent animals on this planet have opposable thumbs.