One day this wont be 'shocking' for some people to see. and I won't even label them a 'cute gay couple', because they are just a cute couple. ~ Why don't you just not label them as "a cute gay couple" now? It starts with you!
This is discriminated against because it breaks a social norm. Two men together is not what we have seen in decades before us, it is the unknown so it is thought of as wrong. But so was bi-racial coupling before it became the "norm.