I agree that religions, at least the later ones, like Christianity, Islam, Etc. are designed to take advantage of fear. Psychology must have been consulted, or observed, in order to do this. Back in the day, rulers had to control the population from turning on the ruling class. How do you do this when you're using them to death?
The problem starts when better, more sound methods are discovered to nurture the people. I say, "Religions WERE meant to keep a person well." Well, most people. My issue is their isn't just "love thy neighbor" but rather, "Women Suck" and "If they don't believe what you believe, kill them all." The sad truth is, Religion is antiquated and we need to ditch it. Folks can feel just as powerful, good, and needed and wanted without religion.
"Men will never be free until the last king is strangled with the entrails of the last priest" --Denis Diderot
"The philosopher has never killed any priests, whereas the priest has killed a great many philosophers." -- Denis Diderot