> Yeah, the religious leader does a lot less harm

This is not a good take.

It is hard to estimate the magnitude of the harm done by even a single religious leader who preaches a message of hate and fear. A leader who deeply instils into his congregation a belief system that has undertones of racism, misogyny, homophobia, and authoritarianism.

I don't personally believe in the god my parents did, and while you're right that it doesn't really matter if who they believe in is real, it does matter that they choose to follow the teachings of the church in the name of that god.

The atrocities of the 20th century, which make everything earlier seem like child's play, are a result of secularization. Modern-style racism was invented by Enlightenment thinkers. Eugenics is the result of genetics and Darwin. Dialectical materialism inspired many mass murderers.

Religion reminds people of their fallibility. When you forget your own limitations, you deify yourself, and nothing good comes of that.

The atrocities of the 20th century are well-documented and popularised in movies and documentaries. There were extraordinary horrors in the past - genocides of entire peoples, forceful religious conversion through slaughter of the entire adult male population of dozens of cities and bringing up children and women according to the winner's religious doctrine - that don't get a single iota of attention today except from historians.

> The atrocities of the 20th century, which make everything earlier seem like child's play, are a result of secularization. Modern-style racism was invented by Enlightenment thinkers. Eugenics is the result of genetics and Darwin. Dialectical materialism inspired many mass murderers.

Mind pointing to some citations? Genuinely curious.

> Religion reminds people of their fallibility.

I don't need religion to remind me of my fallibility. I'm reminded of that on a daily basis when I screw simple things up.

> When you forget your own limitations, you deify yourself...

First, it's a huge stretch to claim that forgetting limitations leads to deification. But secondly, when I forget my own limitations, I'm quickly reminded again by screwing up again.

Religion is not necessary to stay grounded. And not every religion is focused on the fallibility of humans. Do some people find that religion helps them stay grounded? Sure. If that works for you, great.

You're describing something that some religions may do.