What are your thoughts on people who wear nothing in public?

I was thinking about this the other day as I was walking through the Highline park in Manhattan, where I saw a couple of topless women strolling around (since that is now legal in NY). And in both cases it was women that you wouldnt tradionally call attractive. With what (I believe) you wouldnt traditionally call as good looking breasts.

And I wonder. Why is it more often that I see than not, that is is the less conventionally attractive people that chose to show more of their naked body?