\\\\but its a fairly arbitrary decision to say that young females paint their nails and young males do not....I mean who decided that? \\\
Of course it is arbitrary, generally speaking, females wear lipstick, males tend not to, females paint their toenails, men tend not to.
I have to make it clear, that I base my comments on experience gained over a half a century, but clearly times have changed and so must opinions I presume.
LOl..I can't answer your last sentence as i don't understand it.