Nothing wrong with Porn
This is my opinion only:
You hate porn because you were brought up to hate it as simple as that. Hating porn is akin to hating yourself. You think you are open minded? Those who hate porn are about as open minded as homophobes or racists (in my opinion).
Do you realize you exist because your parents had sex?
The orgasm is one of the most amazing experiences instilled by nature to encourage procreation. And yet we are supposed to hate something that's at the core of human nature?
The rules about what is obscene are ludicrous, nonsensical and arbitrary, in some countries kissing equals porn. Doesn't that tell you something?
The reason ex porn stars are ashamed of their past is because society discriminates against sexual expression (porn), just like society has supported slavery, racism, homophobia, inequality of women, etc ... in the past.
The day society loses it's draconian intolerance towards sex is the day porn will become fun and beautiful, the way it's supposed to be.