[toyg]

As a parent myself: that sort of framework tends to absolve parents from their responsibilities, so of course it appeals. "Nothing I could do about it, guv, he was always like that!" It can also be used to reinforce the sense of "talent" or "destiny" they want to (often selfishly) imbue in their spawn.

I've actually gone all the way to the other side. I see in my kids all the issues they've inherited from me and their mother, plus all the extra they get from a different environment from the ones we grew up in. I see where they diverge in attitudes, of course, but that has very clearly a lot to do with firstborn vs sibling and (increasingly, with age) their sex, rather than anything incredibly unique or innate.