Unhappiness is the impedance mismatch between what you expect and what you get. It is reduced by either improving your experience and/or lowering your expectations.

In that regard sex is no different that anything else.

Sexual intercourse can make you happy, but not necessarily.

... and the like ? Why ... yeah, sure.

And the like?? Roflmao

No, I make me happy. Sexual intercourse can give me pleasure if the combination of mood, choice of partner, skill level, and element of trust all coincide. Sexual intercourse can be unpleasant as all hell if these things don't coincide. I'm not sure what you mean by "and the like," but my curiosity is definitely piqued.

Of course. Many sexual groups here you might want to investigate.

A slightly broad brush stroke if I might say so. But in general it depends with whom or what you're having sexual intercourse with

One of the few things that would make me happy.

What's the "like" and what's not to like about it?

Temporarily. But the cement it adds to our interpersonal bond brings me great lasting joy.

Feel free to vomit on my saccharine-sweet adoration of my marriage to my best friend. We both got lucky, in more ways than one.