I was born in China, and moved to the US at the age of 10. My parents were both educated in Communist China and therefore atheists. I do not recall any anti-religious education in school, but do have a fairly vivid memory of watching a state-produced television program on the evils of 迷信 (superstition), which somehow left a deep impression.

After moving to the US, I remember watching Star Trek (reruns) as a teenager and admiring the Spock character. But I don't think I ever had a strong interest in learning how to be more rational, and instead just had an intellectual curiosity in topics that happen to be related to rationality, like economics, game theory, cooperation, the nature of probabilities and anthropic reasoning, the future, the Singularity, moral philosophy, etc., which led me to OvercomingBias and then LessWrong. Even now I think I'm driven more by a desire to satisfy my curiosities than to accomplish any larger goals.

I think my experience may be a counterexample to Something to Protect and Try Harder, but I don't really see how to generalize it.