Actually, a few years ago, fathers would be very upset to hear their daughter say that a lesbian had propositioned her and turned her on to the joys of same sex fun.  Today, he is supposed to be happy and supportive.  Regarding us fathers, yes we would strike out at anyone who trying to force daughters to experience anything they did not want to experience.  But the flaw in your analysis is that all sex is forced or unpleasant.  I have this on the best of authority.  Also, you ignore the fact many people take full advantage of the opposite sex to achieve their objectives, female and male.  IMHO your view is very narrow.