What makes some people turn against religion even when they're raised in a religious household?

Some people grow up and follow how they were raised. By logic if you're raised in a religious household then you'll likely believe in god and religion. But it had the opposite effect on me. I always knew I was an atheist, even when I couldn't speak up during my younger years. Now I'm outspoken about it. This obviously surprised several older family members. I was very drunk the very first time I told them all about it. Even as a kid I was very chatty and inquisitive about everything, asking wanting answers to things that didn't convince me. If they couldn't give me a good answer, I would search online.

What makes others be like me, even if raised religious?

What makes some people turn against religion even when they're raised in a religious household?
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