I really like your comment,  but you get one point terribly wrong when you say "the very base of their belief is that we humans are sinners beyond redemption."  It's the very opposite. They believe that most people, or at least many people, are inherently good.  But, they think, there are SOME inherently bad people (who if we only ostracized them from society, everything would be fine).  It is the justification of the gulag, among other things. 

The church, on the other hand, believes ALL men are irretrievably fallen and can only be saved from this corruption by Jesus Christ.