I'm suggesting that it can be valued for pleasure, and it can be valued for procreation. Because both are true (at least in the PIV scenario).
The anti-sex folks are following old, overly simplistic, and ineffective campaigns to "protect people from themselves (via their genitals)". Most of it is well intended but oh so wrong.
Edit: the only problem is the boundaries of power -- wanting to apply religious beliefs to the whole population rather than their particular sect. And I'd wager a fair amount of the conflict over this power is manufactured in order to keep the base riled up.
People thought that after the pill, sex will become simple and uncomplicated, just have orgies for fun all the time. But it's not happening on a large scale even in the very liberal societies. There was a brief moment with the hippies, but it didn't last long. Yes there is hookup culture, but it's far from uncomplicated. It's not everyone can easily participate in and has its own little games.
It's one of the fundamental components building our social fabric.
Why does pleasure have to be earned? I'm not sure I subscribe to that, I probably need a few decades more of contemplation and experience to answer such a thing. I'm just saying that there is such a template in many people's moralities. I think it's kind of silly, because the universe doesn't care, it's not a vending machine to put in hard work and get rewards. It's way more random and unpredictable than that. Sometimes something easy gives you lots of reward, and toiling away in the wrong way leaves you with nothing. But on the whole, on a large scale, on a population level, at the expectation, you cannot get something out of nothing, it seems. It's not a law of physics or anything. It may also seem pseudo-religious. But overall it seems to be the strategy that people adopt who achieve things. That you need to put in effort to reap rewards. Otherwise all kinds of things can happen, like hedonic adaptation, setting your baseline at a different place, inflation of the value of things etc.
The truest line from Starship Troopers.
This perception that it has value is one of the very things that people add just to complicate things. It isn't about value, or a chase, and to be honest I wish people would decouple it from anything more than intimacy. It should only be about getting you and your partner off. (And making babies, where wanted.)
For something that builds up inside all of us, some of us very quickly, society should really try to make it easier for everyone to access, especially since we are all equipped to provide.
Simply "sawing away" without emotion or "stakes", it loses value.
People don't just want to have sex, they want to have sex with some people, in some circumstances. Men are less picky (both out of necessity and due to lower consequences), but still somewhat selective, if for no other reasons then opportunity costs.
Nothing is simple about sex.
In terms of pure thrusting, that is a very narrow view of it. For one thing you're forgetting about sensuality, foreplay, kink, and polyamory, and the immense feeling of satisfaction of blowing off steam that builds up over time.
Everyone is equipped with the necessary hardware to work in my factory. Barring health issues it costs nothing. Why does your labor need to have "value"?
One can dream...
See that's the problem. We as a society need to stop putting sex on a pedestal. It's just sex. Pleasure is pleasure, why would anyone not want to be pleasured?
And why is pleasure something that has to be earned? It is very simple to give and receive pleasure, why complicate that?