Totally disagree with religions suppression. May be you have seen it with different eyes. I have seen religions have done so much to make a harmonic society. Suppression was not cuz of religion the actual cause was absence of religion which you will understand only if you know the religion. Religions supported human being with good moral, social, economical, technical and physical aspects of life. You may claim that u dont need religion to differentiate wt is gud or bador true or false but you inherited it from someone who had religion. What I see is , it is not only we humans have religion even animals have religion even other creatures have religion. Ever seen a goat or sheep eating flesh or meat? Cuz it has a natural boundary and limitation. Ever seen a lion eating grass nope..ever seen earth going away from its orbit..everything in the world has set of rules prescribed by nature and all of them the same base. Of course there will be some behavioural change depends on the surrounding they grow but predominantly they are bound to some set of natural rules.
P.S
Sry for any typo as I typed it from mobile.