What's your biggest beef with religion?

[Whateverist]

I have three major beeves. 

I see no beef.

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I'm sure most of us have multiple "beefs." But this thread isn't about those. Just about your biggest one. Theists encouraged to participate.

Mine: It's anti-intellectual. -- It discourages and disparages intellectual curiosity.

Your complaint is too broad. There are religious groups that encourage and have developed thousands of years worth of writing, critical thinking, and curiosity. Religion launched modern science. Seems you need to narrow things a bit since it is trivially easy to find a defeater and render your point invalid.

For that reason I think I'm even more against the mountains of contingencies constructed from the assumption that God is a thing.  I'd much rather hear about someone's feels for God than all that stuff.