The physical act of masturbation itself may not be “metaphysically given,” but the capacity to orgasm is. And all people are naturally curious about their bodies when they are young. That’s where masturbation comes from: a natural curiosity about your own body and it’s various functions and abilities. There is not a single immoral thing about discovering your own body. It builds self-esteem, in fact, to become acquainted with, safe, comfortable, and confident with your own body.
Masturbation is perfectly moral and even desirable in many situations. When you want to discover your own body. When you lack a lover but want sexual pleasure. When your lover is temporarily away and you masturbate to thoughts of him/her.
It can just as easily be immoral, depending on *what* you masturbate to. If your…material or the substance of your fantasies involved anything immoral, then the act would also be immoral. That would include anything such as child porn, rape, sado-masochism, necrophilia, scatological elements, and probably many other things I probably don’t even want to think about. It can also be immoral if you masturbate all the time instead of having sex with your lover. It would also hint at a problem in your relationship. It would also be immoral if that’s all you did, and it interfered with work and your livelihood. Although I doubt that can really happen.
Pornography is, I think, debatable. First it depends on what you define as pornography, and the content thereof. If the content involves any of the above, then it is most definitely immoral. If it is simply the normal sex act, between two consenting adults then it is not immoral. However, a lot of pornography is misogynistic and degrades and demeans women. It also typically fulfills perverted fetishes, which is defined as sexual attraction to an inanimate object. That doesn’t necessarily harm anyone…although I can’t be sure…but it’s psychologically destructive because it perverts the proper nature of sex.
As for the morality of the actors: it’s hard to say, but performing sex for money is rather like prostitution. What’s worse is that they are performing sex with the knowledge that millions of strangers will be enjoying their “performance.” It degrades sex to the level of exhibitionism.
Overall, probably 99% of pornography is repulsive to anyone with any self-respect and respect for sex. Which is why I avoid it.
A lot of other things are repulsive about most pornography. The actors are hideous, both female and male. They are usually surgically enhanced, which is a whole other layer of grotesque. They usually aren’t the most quick-witted people around, to put it nicely. And the scenarios are often comical and stupid. If they are meant to fulfill someone’s fantasy they certainly aren’t fulfilling mine.
“Pornography” that I think is totally fine, is nude or semi-nude pictures although I don’t know if you can call that pornography. Even that is wrong, though, if you look at it while you’re in a relationship. It would also indicate that something is wrong with your relationship if your lover isn’t enough for you, so to speak.