IIN to not understand why everyone isn't gay?

I think you don't understand it for the same reasons some straight people don't understand why everyone isn't heterosexual....because you are looking at the world through your own glasses. There is nothing wrong with being attracted to or open to being with everyone, but not everyone is wired that way. It just is what it is. A straight person isn't less evolved or less open-minded than someone who is, for instance, pansexual...they just are how they were born. I do however, think that sexuality is becoming more fluid as our society is progressing...science is making it so that heterosexual sex is no longer necessary to have children, and therefore the human race can continue regardless of who we chose to partner with. Perhaps less people will be "straight" as generations continue. Time will tell!