Whilst the majority of Christians don't go on about their faith, and many do a lot of good helping others, there are others who claim to be Christians, but are nothing but WUMS, imo. There are the hell fire brigade who drool at the thought of others burning in hell for all eternity. There are the bigots who use the Bible as an excuse for their nastiness, particularly towards gays. Forums seem to bring out the worst in some Christians, who just love to wind others up, and refuse to turn the other cheek!
If you are anything to go by, Floo, the equivalent could be said about those without a religious faith.
If Jesus was everything they believe him to be, instead of long dead, don't they give a thought to the phrase, 'depart from me for I never knew you', which might apply to them too, as well as the heathen like myself?
I suspect that most of us have that idea in the back of our minds all the time. I've referred to it often enough, both here and elsewhere. But you need to remember that, as humans, Christians aren't perfect (though we are working towards that aim), and when comments that misrepresent Christianity and God - like many of yours do, by the way - fly around in the way that they do, it can be difficult not to become fed up with the attitude of the authors of such comments.