Your slights and insults do not affect Christianity in any significant way.
Those "slights and insults" are positive claims supported by evidence and argument. If you think they have no merit or impact, you have no reason to mind them.
Actually, there is, and I have provided mountains of it over several years in several tens of thousands of posts. This harm is weighed against the crumbs of good that you and others have been able to demonstrate. That's net harm, meaning that what isn't true is the claim that Christianity does more good than harm.There's no evidence to back up the claim that churches and Christianity do more harm than good.
It isn't necessary for us to agree. It's probably also not possible given our different initial premises and methods for deciding truth.