The already do bubbles. You can't marry Miley, I can't marry Spencer. If you don't have the "right" to marry another woman and I don't have the "right" to marry another man, why should anyone else?
Because they want to? That's not a "right" that's a want, and "wants" can't be legislated for everyone. I want a Lamborghini, it's my right and congress should pass a law giving me what I want? It doesn't work that way.