I'm not suggesting that it is "insulting" to say that some things cannot be decided by reasoning and proof. Of course I also say that it is quite reasonable not to decide - or to make a provisional decision if reason and evidence can get us that far.
What I do find insulting is the misrepresentations, and the attempts to insinuate that it is morally wrong not to believe that God exists. As an attempt to convince it's not going to work. And it is doubly foolish to behave so badly on a thread where you are trying to offer your own "good" behaviour as evidence.