The problem is the current religions have done it all wrong... you cannot have things in your "holy book"... "written by god"... like slavery, homophobia, et al
Simply reading the old testament has turned many christians into atheists
Religion "could" be a good tool... if you remove all the obviously wrong parts... the hatred and bigotry, the multiple genocides, magic and miracles, etc
Religion has inspired so many horrible events in history like the crusades, inquisition, witch burnings, book burnings(science)...
and more recently, 9/11, ISIS, the Orlando night club massacre, murders of both atheists and christians by machete in Bangladesh
When will it end?!?