I would just block him and not give it a second thought. He probably signed up there just to troll like this and entertain himself with people explaining themselves.
I can't believe someone actually posted a question like "are women OBLIGATED to shave their legs". Since when is shaving an "obligation"? The question doesn't even make sense. If there is some country where women ARE required by law to shave their legs, then it's not even a matter of opinion whether they are "obligated".
Teh stuiped. It burns.