> it does some form of sex education when parents/school/society does none
Education? Porn is "education?" Porn is to sex education as war movies are to combat training.
> it lets people realize what sex is about (think about amateur categories and how you can see people not that different from you having sex and realizing that different shapes and sizes, all work)
If I learn what "sex is about" through porn, then I haven't yet learned that sex can be intimate, or that it can result in babies.
> it lets you explore your own sexuality (could you have immagine you would have liked that kind of things?)
It seems limiting to "explore your sexuality" in the novelty of visual and auditory stimulation. Sort of one dimensional. What about touching, smells, or interaction with another person?
> it lets you explore sexuality with your own partner (people get bored of the same sex every time, you know?)
That seems like a two-way conversation (between you and your partner) becoming a three-way conversation where you include the ideas of the porn industry.