This pains me to say this, but Christians, like non-Christians, come in varying levels of maturity. I also believe that many people join Christianity for the same fundamental reasons that many young people became Nazi's in pre-war Germany. Of course, I mean for this to span all groups which offer being part of an "inclusive benevolent" organization and not just Christianity.
I have, for years, seen "professing Christians" on this site reflect a decidedly non-Christian attitude toward others in their posts. Sometimes it means they are just still being worked on by God (as we all are). Sometimes it means they are only members of the church for their own personal gain (I could tell you stories).
They're only human and many of them, like you and me, mean well. This culture doesn't do a very good job of teaching social skills... BTW, regarding married men addicted to porn - my two cents worth: show me such a man (and many of them are Christians - I've seen their history and cache files) and I will show you a wife that restricts sex. Now all we're left with, regarding that situation, is the old chicken-or-egg argument.
I've been reading this thread and waiting for somebody to make this observation. Many people join organized religion because they seek validation from others. They have low self-esteem, low confidence, insecurity, and they're seeking for acceptance from others. They believe that if they go out of their way to let everyone know that they're a Christian, make frequent references to Jesus, speak in esoteric phrases, and type "He" and "Him" instead of "he" and "him", that it somehow makes them Christian. I think they're more concerned with being acceptead as a Christian in the eyes of their peers than they are being accepted by their god.
These sorts of people are easy to spot. They're precisely the ones OWK is talking about - the spiteful, scornful, finger-pointing, mocking, bitter, self-righteous do-gooders. They enjoy watching others suffer because it fills them with gratification and makes their own pathetic lives seem less unpleasant in comparison. They hide behind a veil of religiosity and use it to justify their behavior ["I'm doing as He commands!"]. They are nothing but frauds and phonies and are truely big losers. It is the duty of every real Christian to expose them and denounce them as such.