The latter comes from the realization that some things (ie actions based only on gaining money/power/fame, knowingly taking advantage of people, needlessly killing, laziness, cheating for gain, not helping the poor, not forgiving people).
This arises from nihilism because some believe that it can't be possible that nothing matters when these values are "beyond our earthly realm" in that it often requires seeing things on a more spiritual level, and thinking beyond immediate gratification.
It is then that one may see nihilistic people as those feeding their temptations as these are often the easiest things to do (running vs. sitting and getting fat).
So while one can think nothing matters, some may then see that indeed some actions "retard" not just ourselves but all, and others are a net benefit for society.
Though believing that such actions are actually a net benefit may be considered "faith" because I can't know for sure.
Just my thoughts.