[vddqvvpj] Profanity and children

The way a person uses profanity is difficult to change, how they use language when not thinking about it, so therefore becomes a social class marker.  Social class markers have lifelong effects, so, assuming this model is correct, parents are justifiably concerned about what profanity their kid learns.  But there is a feeling of wasted effort in training the child merely to appear a certain way for their best chances in society, rather than the expending that effort toward more substantive education.

Vaguely related, a person's awkwardness about sex (which is the subject of much profanity) is a social class marker.