If it wasn't for Humanity there'd be no religion - there'd be no science either of course - but at least the Laws of Physics would still be there, our understanding of which has been achieved through long years of struggle and Objective Peer-Reviewed hard work. Organisms would still be evolving, and maybe some of them would achieve higher forms of sentience, cognition, culture and technology. If so, they'd discover the same stuff we did - evolutionary and physical science being an objective universal constant - though when it came to Culturally Subjective Religion, they'd be telling different stories, assuming they bothered with it, because Religion, for better or for worse (in this case worse), is a uniquely human thing, the utter subjectivity of which comes down to one universal constant: They Can't All be Right, But They Can All be Wrong.