Music?
Breathing has gotta be right up there.
Language is pretty good. Almost everyone uses that.
Food. Food is very popular. Nearly everyone eats food.
I’d say water, but some folks seem to get by on beer instead.
Probably orgasms
an amazing poop
i mean, everyone poops, but when you have an amazing poop it is probably the most popular thing
Do people with a colostomy bag “poop”? They defecate but it’s not what you describe
Similarly a lot of the other base human experiences in this thread are not experienced by a small subset of the disabled. Like food - I’ve worked with people who cannot eat food and have to have nutrients and water pumped directly into their stomach or intestines. Breathing has people on ventilators but that’s typically a “not much time left” situation whereas the food and poop situation can last decades. Sleep disorders can make sleeping a nightmare task that is dreadful night after night. Etc
I don’t know if there’s a universal positive experience, is my point
Sleep
Dying. Everyone’s doing it.
Only 93% do, actually. (7% of humans to have ever existed are still alive.)