If our species is to avert climate change catastrophe, our moral compass needs to incorporate a temporal dimension that is not second nature to most human societies. David Roberts at Grist reflected on this in an essay inspired by the Newtown shootings and President Obama's reflections speaking there.
Do read it all.
I should probably add that an expanding universe of empathetic concern -- from family, to locality, to tribe, to nation, to the planet, and looking forward to the future -- is not confined to those who have offspring. Not everyone reproduces and in humans that often socially a good thing. In fact, one of the ways we, as human societies, are beginning to care for the planet is that we are almost universally concluding that enough people are enough. Birth rates fall everywhere that the standard of living rises beyond subsistence and current generations become confident that life will go on in their tribe even if they don't reproduce to their biological limits.
The planet needs humans to understand other sorts of limits that require more intellectual abstraction. The human animal has survived and taken over the planet because we can manipulate abstractions, so what we must do is within the range of what we can do. Expanded empathy makes adapting to necessity more desirable and is probably necessary to spur us to the actions we must take to keep the future livable.
Graphic from An Illustrated Guide to the Science of Global Warming Impacts: How We Know Inaction is the Gravest Threat Humanity Faces by Joe Romm. Read that too.