Moved to society.
I think it isn't wrong to 'disagree' with it. You are entitled to your own opinions. What is wrong though... is to let your opinion define other fellow human beings. It is also wrong to then discriminate against someone because of your opinion and it is, furthermore, wrong to use religion as an excuse for downright unacceptable behaviour towards another living, human person with feelings. Sure, you can think being gay is 'wrong', you can think what you like. That's your prerogative. What you cannot do, what you must never do, is to make someone feel bad for being themselves, because that's when it's wrong.