YOU keep your poor excuse for the practice of Christianity out of your discussions of groups that center themselves on Christian/Catholic ideals.
What has made these groups wonderful is that they fully live up to what a Christian is supposed to be in today's world.  Is the practice of Christianity supposed to be a "private affair"?  That is an excuse that those not acquainted with the Church's Social Gospel, trip over all the time.  

The heart of the common good is an on-going action, , foundational to, but distinct from all the other public, much less private, goods we pursue.  The common good of Catholic social thought is an ongoing acting that must be maintained in act

It ought to strike believers who have stood strongly against Western individualism and the privatizing of religion as something of a tragedy---tha we can do not better.  We can, and we must.