Earlier quoted context omitted.
Having porn before sex is probably a lot more instructive and useful to our sexual well being than an alternative world where your only contact with sex before having it is just private conversations about it with the few people you feel comfortable discussing it with. I'm very glad that I live in a post Kinsey Report world.
I'd disagree here. Certain porn might be instructive, but most porn includes violence towards women. Not only that, but in 95% of scenes that included this violence, the women responds either (a) with passive compliance or (b) enjoyment. This is teaching observers, those especially which have never been introduced to sex before, that women desire to be hit, beaten, strangled, raped, etc and if they don't enjoy it or…
Sexual violence towards women existed well before any porn ever existed. For example, the vikings raped and pillaged. I'm pretty sure they didn't have porn available to motivate them. There are many more examples. Rape has been a constant in history and was not uncommon well before porn became readily available.