Why conservatism in the sense of not accepting the normal evolution of humankind doesn't work: Because nobody knows where you should draw the line where "evolution" should stop.
Look at the Amish: stopped accepting technology in the 18th century as "not being in the bible". Yet, tons of advancements in science and technology occurred between the time the bible was written and they "stopped" accepting evolution of technology. Why the 18th century then? Why not the 16th? Or the fifth? or the first century for that matter?
Right now, if humankind doesn't release itself from the bounds of religions, any of them, and "evolve" to determine what it wants to be as a society of nations and people, it runs the serious risk of soon being supplanted by another intelligent life form: Artificial Intelligence. When AI gets to the point where it can self-program to be better, more evolved and intelligent, it might decide we have no business being here considering what we have done to the planet.