Catholic Fundamentalists understand that any human being can only move in two directions, toward God or away from Him. Every choice we make moves us, even if ever-so-slightly, in one direction or the other.
As we realize this, we become more careful.
It is true that God loves us, and wants the best for us, and will forgive us our sins (if we ask), but that’s no reason to get into bad habits. Bad habits move us away from Him. If we get too far away, we may not be able to get back in time.