Why morality may be significant: In life there seem to be two essential processes: transformation and transcendence. Where transformation is the progression, quantitatively of a quality a thing has; whereas transcendence is the transformation of the qualities themselves, such as water into gas. When something continues to change according to transformation, often this will lead to a transcendence, like heating of water, or magnetizing metal.
Likewise, morality may change our behavior in this manner, changing us incrementally toward a transcendence of condition that may lead to entirely different modes of being.