Is religion a sign of higher intelligence? No other species can grasp the idea of religion and they dont pray to some unknown god for assistance.
Is religion a sign of humanity's weakness: It's inability to deal with the unknown. We NEED answers for everything, yet when it comes to religion we have to get by with just having faith.
Does it really matter at all? When we all inevitably die, there will be no right and wrong, just death. I have faith in that.