>I was exposed to porn several ways pre-Internet. Older siblings, news stands, late night cable. If I wanted more, I could get it. It was simply not a problem.

Yup. Me too.

And it goes back much further. Cf. "Pictures of Lily"[0] for a pop culture exposition from nearly sixty years ago. The point being that "porn" isn't anything new, nor was it difficult to obtain (hence a popular song about "porn") even before computer networks.

[0] https://www.youtube.com/watch?v=g-PHDR2yhxE&list=RDg-PHDR2yh...

Edit: For those who would cite the current ubiquity of "hardcore" porn on the 'net, I'd say that's a difference in degree, not in kind. Something to consider.