What do you make of all the Christians here who seem to do nothing but spout negativity?

The ones who point fingers at other faiths (especially their fellow Christians of different denominations)? There are people here who seem only to ask questions which are veiled or not-so-veiled attacks on others. They seem to take no joy or comfort from their own faith, but just want to taunt and bait others. Personally, I think they are insecure in their faith, what do you think?