[meekmind]

Like it or not Western civilization is permeated with Christian mores. As practiced in the West, large chunks of law, philosophy, and science all have historical roots in Christian culture. You can choose whether or not to understand how the cultural, socio-economic and political environment affects you and your beliefs and the beliefs of those around you. You can "let" people be whatever they want, but you cannot occur in a vacuum and would presumably stand to gain from learning how much of what you may consider crazy and irrational was in-fact based in psychological and physiological reality that is just as relevant today as it ever was.