The irony of your statement is that any differing opinion means the person has a closed mind, which, by your own words you have a closed mind as well. Everyone has their own biases. Telling someone they can't have an opinion other than your own is not very tolerant.

For a highly simplified example: I don't care for vanilla ice cream, therefore anyone who speaks highly of vanilla ice cream is wrong. But chocolate ice cream? Everyone should eat that even if they don't care for it because it is the best.

Now, since you are already forming an opinion that I must be hateful and homophobic, I personally don't care if they get married or not. Their personal decisions are theirs. I don't care much who marries who or if they are gay or not. I'm just trying to point out that by not accepting that others have different ideas, opinions, feelings and views and insisting that their ideas, opinions, feelings and views are wrong because they aren't YOUR ideas, opinions, feelings or views, is hypocritical.

Try to agree to disagree and you will be a happier person.