You summed up my attitude quite nicely, thank you.
I've dealt with these types before on issues having NOTHING to do with religion and have been accused of being a bible thumping holier-than-thou type (not on FR) in the same sentence that I am being called a hypocrite.
The way I look at it(right or wrong), is that those who need to brag about their 'religiousity or Christianity' and berate others for a perceived lack of, have serious doubts regarding their own faith. I don't particularly care what others think of my "Christianity" or lack, that is between God and me, just as theirs is.
I do wish (and pray) a few of them would remember the virtue of humility and confine their claims of being better than others to the thoughts left in their mind and not pushed through their keyboards. But, alas, those who need to remember that most are those that will fail to see themselves in our comments.