>>Disagreeing with homosexuality or not is your right.<<

I think it is his right.

"What your neighbour does with his or her friends is really none of your damned business."

Doesn't that apply to opinions held as well as sexuality?

Who ever you are referring to has a right to his opinion and to express it as much as you have the right to rebut it.

I happen to share your opinion. But I can't say that someone else does not have a right to theirs.