It seems as though we are going backwards. We were doing so well in realising that all human beings are worthy individuals with emotional and intellectual depth, yet now so many of us don’t seem to see any problem with society encouraging many to reduce themselves to sexual objects. How is this rationalised?
edit: typo
Same reason anything else is. It’s big money. Porn is a multi billion dollar industry.
As for why “extreme” porn is so “normalized” I think it’s more because it’s stigmatized ironically. Have you ever had an in person conversation about why there’s so much step family porn? No of course not because then both people would be acknowledging they watch porn for one. So the social factors that would guide things are totally absent.