Once religion was everything, you performed a ritual before you started work, or when you gave birth, you went to the shaman when ill, unhappy, in need of advice or in love. But over a long period of time better ways have been found to do almost everything for which humans have a need, leaving religion on the sidelines. Better to see a doctor if you are ill, a psychologist or philosopher if unhappy, an engineer and a navigator if you want to cross the sea, social welfare if poor, a school for education, etc. etc. the list is endless. At which point you have to ask, what in the end will be left to religion, and what is even today observably left to religion ? It can only be that which more rationally constructed institutions can not, or do not, want to do. Something immoral or negative perhaps ? Of course, many people get a positive experience from religion, or they would not do it. But people also inject themselves with toxic chemicals, anorexics starve themselves, and flat earthers spend vast amounts of time trying to prove the ridiculous, because they feel they get a positive experience from doing so. Yet should such things be illegal or do such people need help ?