Why are there so many male nudists?

I was debating whether to post this on the male or female site, as it's as much of a question why there are much less female nudists as why there are so many male nudists. I decided to post it here because I suspect on the male forum, I would get a politically correct answer, so I thought I would solicit the female perspective?

Why are the vast majority of people on this site males? What drives males to be more liberal with their nudity, given that society frowns upon male nudity much more than female nudity? Surely it is something deeper than men want to show off their assets?

This question has been bugging me since I joined the site so I thought I would ask members.