My opinion is that we need to be very open and accepting of all sexualities, and do proper research on it so we have accurate information to give to our children as they grow up.
So far, it would seem that sexuality is not a choice, and that it's far more diverse than "Gay Vs Straight". For example, I believe it's confirmed that there is a significant difference between an effeminate gay man, and a woman's mindset inside a man's body. I also believe it's generally accepted that we are all somewhat bisexual, must of us are simply further along the spectrum of being attracted to a our opposite gender.
I would prefer if this kind of information was far more prominent as a required standard for our education (rather than an hour/day/week per year about the subject). Also, I believe the world would be a much friendlier place if we were all bisexual, as the gender in power would have no reason to sexualize the opposite gender any more than their own (Fairness through equal exploitation), and we would all have a much wider choice or romantic/sexual interest.
By the way, I'm a straight guy, who truly can't tell whether or not I'm attractive (I suppose I've stopped considering myself ugly now that I'm no longer a teen), but I will sometimes notice when actors/models are clearly presented to be attracted to.