Here's a link to Psychology Today that probably answers your question in the terms it was asked.

And here's one from the Scientific American on The Sunny Side of Smut.

Interesting question.  In retrospect, simply seeing films of other humans engaging in various forms of copulation activities never did very much for me.

That type of genital activity is an important but relatively minor part of true sexuial intimacy that marriage affords.  I do think true sexual intimacy can be achieved outside of marriage on occasion, … Read more

I have no idea what a 2000+ year old man would be like.

I have no idea what a 2000+ year old man would be like.