If you had said "Catholic" instead of "religious" in the OP, we'd be down to nitpicky correlation/causation stuff.
If you meant "religious" when you said "religious", those numbers from religions of non-trivial size like Muslim (60%) and Protestant (54%) disprove the statement you made in the OP pretty cleanly.
So I guess it depends on how much you're willing to move the goal posts to avoid admitting you were wrong in the OP.
I still don't believe I was wrong. I'm not moving the goalposts. The data above supports my view, no?Do you disagree with my theory that people tend to take on the religion that is handed to them as children?
I wholeheartedly disagree with your OP statement "
I suspect that in 99% of cases, your decision to have faith in X is based solely on the fact that you grew up in a certain part of the world and had parents who decided to tell you to have faith in X." That's a much more extreme statement than "people tend to take on the religion that is handed to them as children". Your OP statement claims religious people are only religious because their parents are, and their parents are only religious because of where they live.
Your revised statement is so uncontroversial and so widely accepted, it doesn't qualify as insightful. You shouldn't be taking credit for it as "your" theory, and you certainly should be trying to equate it with what you said in the OP.
Shouldn't it be expected that the child takes on at least some of the attributes of their parents? We're talking about shared DNA in the vast majority of cases here, and environmental factors controlled by the parents as well. The vast majority of children are not randomly assigned.