I guess there's a bit of a misunderstanding: I didn't imply that you need to feed any (existing or nonexisting, that's debatable) competition drive, I meant that social salsa is not challenging enough from a dance perspective. There are certainly very challenging aspects to it, but purely dance-wise, thought as a physical activity, it is fairly easy, you progress much faster than in many other dance forms and at least if understanding and copying movement comes easy to you, it is easier to replicate with less training than, say, ballet, contemporary, or even ballroom/latin.