Mean People that doesn't have anything to prove.

I found someone in a group who posted some poor memes about false Mormonism claims. I don't know why these people were so mean about LDS beliefs. So, I decided to contact him and ask him to have a simple and direct discussion. And to my surprise, he couldn't claim anything; he didn't even answer a simple question, rather throwing it back. So, assuming I claim it as false, then suddenly he ended it as if there was nothing to discuss. And the worst thing is, he claims it as a finale of my said claim, posting it to his wall. Why are this type of people still exist?

Here is our discussion; see for yourself -