Possible argument against religion and God?

the problem of evil? Tell me do you seriously think that if their was NO religious doctrine we would be in the streets killing, stealing and just have no ethic moral. Human kind doesnt need to be scared into being good. We would be a highly intelligent functioning society with possibly less crime without religion, think about all the wars its provoked in the past all the violence it has caused, all the "evil" as for evil, there will always be good and bad people. But just think about it like this if there was not evil , we would not know what good is.