I am also a Girl Scout Alum.
I had a whole response typed out but then I deleted it.
I can boil it down to this = why should someone be denied the opportunity to join a group and learn because they're the 'wrong' sex? Where does this stop? Should nurses only be women and doctors only be men?
Shortly after landing the job I'm currently in I was told by a man that I didn't deserve the job because it's a man's job - - a man should be in there, supporting his family while the woman should be home supporting the man. I suggested that maybe the best job candidate won, regardless of who had the ovaries and who had the testes because the presence/absence of either does nothing for one's ability to do the job well.
That puts you several steps ahead of your father. Congrats