Yes most people don't want their children to be porn stars, but parents often don't want their children to have a wide variety of jobs which are necessary and rhat they don't look down on.
No, "I have higher aspirations for my child then to be [whatever]" is not at all the same thing as the shame and revulsion which characterise most folks' feelings towards the notion of their child working in the sex industry.
Pornography is hardly confined to countries that are rooted in Puritanism. It transcends all boundaries and all times. All societies produce forms of pornography. Since pornography is simply the visual or oral depiction of sex, and sex is a universal interest, why would you expect any different?
I'm not talking about the
existence of pornography, I'm talking about its prevalence, and hidden prevalence at that. Sex is a universal interest, but the expression of that interest is shaped by the cultural domain. Individuals in a society which was truly open about human sexuality would have less need to closet themselves away from one another to furtively gorge on the contrived delights of pornography.