Hmm... I suppose there are arguments for or against the perceived rigid structure of dancesport/ballroom. It's nice to have at least some structure for beginners to start out, but one of the most interesting competitions I've ever had a chance to see are Latin finals. There's certainly a different style of expression than salsa, but still... the sort of "jungle lust" that you can see in ballroom I suppose is just too funny to export into salsa. I also guess i am not as knowledgeable about variations of salsa music itself, but ballroom/Latin dancing does have the "variety" enforcement of learning not just one style of dance. That means that the people who think that all salsa songs sound completely alike get bored (I get this complaint more from swingers than ballroomers, but that's probably sampling error). Ballroom at least has varieties of speed and expression that salsa does not always lend itself to. But then again, I could be completely wrong.