The thing is, you do teach false teachings (universalism, your off concept of marriage, etc.). You're not alone in that though, there are all kinds of Christians who do. And there's no actual condemnation with me saying so, because Christ didn't come to condemn. I'm just saying it how it is.
But if you sat by quietly and said "yeah, I have beliefs that a lot of people won't believe in - they stray from what is common beliefs in Christianity" then you wouldn't see the things you see.
Instead, you debate people who know the truth, and you come in and try to teach us and you try to teach others your ideas.
We, for the gospel's sake, try to show you that you're wrong. It's partly a rebuke but also partly a "I don't know if he's a true brother or not, so I'll attempt to show him the truth". Not all of us have wisdom to be able to discern who is a true brother and who isn't, so when we see out-there beliefs attached to a person who says they are a brother, and we see a different gospel then the one Christ and the apostles taught, we try to warn you.
Some of us do know what the bible means, we do know what salvation is and how to obtain it, we do know answers to some of the questions, and we have a common ground in what scripture teaches. Unity.
It looks like from your OP you're mixing two groups of people. The ones, like myself, won't preach to you in hate but we also fit the bill of a lot of things you wrote in there, and then the others who preach a message of hate and do it out of hateful reasons.
Just because I challenge your beliefs and show you the truth doesn't mean you can categorize me in with the other people, the people who hate.