Why do some people copy how they were raised and others don't?

I'm curious about the different reactions among people. There is a woman on gag (this forum) that was raised with a religion and spanked as a little kid. She's very outspoken about her hatred towards corporal punishment on kids and is an atheist. She turned against her upbringing.

Someone else can be raised just like that woman was but unlike her, they can continue the family tradition and raise their own kids the same way they were.

Even if raised under similar circumstances, what makes others copy the same thing and others acquire different thoughts and values?

Why do some people copy how they were raised and others don't?
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