Why do people always hang around at Fortnite when they win?

You know it when you win in Fortnite, you can dance or do nothing or go to the lobby

but then there are people who dumb build so stupid after they won, where is the logic behind it? You've won the game and you're done, why do you still build around so stupidly

Just press out of boredom any buttons before you leave the lobby, I think that has no psychological background.

Where is the reason for a win to dance has no logic but you do it because you have fun.

That one does not have to be triggered xD