Religion is a tool. It can be used for good or to do harm, the same as engineering can be used to make tanks or tractors, atom bombs or nuclear power. Religion is guilty of much but it is also used as a scapegoat. Humans will do what they want to and find an excuse to justify it.
Humans are by nature mystical creatures, living a world that has become an experiment in engineering. Some people find great emotional comfort in pursuing a spiritual path. It fulfils a deep need that must be channelled into something. It helps them find balance in a modern world. It is a luxury I can no longer enjoy myself.
Perhaps abolishing all belief that there may be something more to life than we can perceive from our outlook on planet earth, could do more harm that good to many peaceful people.