I spent my childhood dancing and at discos. I can Macarena with the best of them but never learn to agado 
I dance all the time at home and out. I even make up dances when I do the dishes or hang the washing up or change a nappy, which my kids join in with. We have "dance parties" at home when they're a bit stir crazy and need to burn some energy off (most evenings while I cook the dinner). One of my children is a natural dancer and performer, one of them has two left feet, but we have fun and they always join in.
I used to go clubbing when I was younger with lads who couldn't dance. They mostly would take residence at the bar, jump and wave their arms about or just kind of sway when dancing with a partner. So I don't think everybody learns to dance.
And definitely not everybody learns to agado.