Religion, and any false belief systems are inherently bad.
They prey on the "weak-minded" among us.
Over the years, this has been studied time and time again: roughly 35% of all people will go along with something, even if it's blatantly false, if you say it consistently and enough times.
Some humans are innately "weak-minded." They don't want truth, nor leadership, and take the path of, what seems to them, the least resistance.
If it looks false; if it tests false, it's likely false.
The intolerance, hatred, antagonism, and lack of critical thinking encouraged by false belief systems has gone on for several thousand years.
It wasn't to long ago that The Catholic Church chopped off the heads of folks who said the world was round.
Ironically, most people in false belief systems have little hope of conversion to reality-based views. It just is what it is: sad.
E.g.: We are in IRAQ, dealing with a bunch of folks with passionate beliefs in very jaded false belief systems. Are we so audacious that we think we can change centuries of culture there?