Just because Einstein said there is a god, doesn't mean that there is one.
Voltaire once said "if there was no god it would be necessary to create him"
In other words some people need something to explain why we are here/what life is for.
Mikhila Bakunin wrote "if there was a god it would be necessary to abolish him"
He also wrote "People go to church for the same reasons they go to a tavern: to stupefy themselves, to forget their misery, to imagine themselves, for a few minutes anyway, free and happy."
Try reading "God and the state" by Bakunin or "Twelve Proofs of the Non-existence of God" by Sebastien Faure for a reasoned debate on the whole subject (and a bit more).
For me, religion is a form of oppression, to keep the poor in line and teach them not to question the establishment by promising a reward after death which is something they can not promise.
