@Charles you make a great point, however I disagree.
when you say: If you choose to believe in it, you can’t be brainwashed by it, good point… However, 90% of us don’t choose to believe in Religion. We are taught and trained to believe in Religion. Mentally and subconsciously, many of us are adopted into religion. If you grew up in a Christian home, more than likely, you will grow up to become A Christian. We christening the baby before the baby can talk or walk.
If you grew up in a Muslim home, chances are you will become a Muslim… and same for any other religion out there. The bottom line is we are adopted into religion based on the influences of culture, circumstances, and geographic… because often times depending on where you live in the world, it dictates your religion. that within itself to me is a form of brainwashing.