So religion is a result of our nature. As reason replaces superstition can we not leave it behind?
Not without leaving our humanity behind, IMHO.
I have a phobia of snakes. I consider myself a person of reason, but yet I am unreasonably afraid of snakes. Little garden snakes give the the heebeejeebies even though I know that they will not and can not hurt me. It is just part of my psyche, and I have accepted it. I think unreasonable and illogical emotions like my phobia of snakes is just a part of the human condition. It is as much a part of us as is our ability to reason and be logical. I happen to believe that our foibles are what make us human.