I think it would absolutely be a perfect world. Then, questions like this wouldn't need to come up in the first place. Also, what does my being/not being bisexual matter if I think that it would make the world a better place? I don't have to be something to think that said something would make the world a better/perfect place.
You're saying that peoples' perspective is important, and I don't disagree, but keep in mind that if society were different in this "perfect world" that is completely hypothetical, then there might be a lot of people in this thread who'd think far differently than they do now.
This may seem like it's flying in the face of things I've said, but I don't consider someone who won't have sex with a trans person to be a bigot. To me, a bigot is someone who says "I'll never see a MtF as a female and I will always call him "him" because he's NOT A WOMAN!" My husband was like this until we became friends with a transgender lady and he realized, "holy shit, her chromosomes are irrelevant." He's a "medical guy" so until we actually knew a trans person, he couldn't wrap his head around it.