>>Additionally, i have noted that people’s expectations of their desired partner is usually skewed from what they see in porn.

Porn is hardly the only - or even the main - driver of this, though. Look around you: you'll see billboards, magazines, TV commercials, banner ads, etc. etc. basically a plethora of images showing gorgeous women. Compared to that, porn's effect on men's partner expectations is probably negligible (unless it's for specifically sexual attributes like whether they shave their genitalia).

Note that post-coital depression/tristesse/dysphoria (terminology has varied over time) is a very real thing that people feel, regardless of whether porn is involved. Human contact can counteract this, however, which is an advantage of in-person sex.

This seems to be indicative of a problem with them not with porn. They probably come from heavily religious backrounds that makes them feel guilty.

I have seen no evidence in myself or my friends that porn affected our expectations for our partners.