1st off, u must believe in reincarnation. Which isn't so hard if the only alternative is death for ever and ever!
Once u come to that conclusion, lots of possibilities exist!
U r a man in this life because u must have been a beautiful woman in your last one! (Why beautiful? Because imaging u were r an ugly hag isn't much fun!)
Because you're a man in this life you'll be a beautiful woman in your next life! (Why beautiful? Because---read above!)