It is the opium of the people
I heard that many many years ago and didn't understand it. Now I get it. Especially after seeing a documentary about very poor people that lived where drugs were grown. They didn't have enough to eat, even the babies. So they would give the children opium so that they didn't feel the hunger. Everyone was addicted to the opium. It made their life bearable.
Until death is gone, there will be some kind of religion. Religion dulls the pain of death like the opium. Unfortunately, the ones who make religion a successful business, are sociopaths at best.