What if that killer asteroid hits Mars while we make these (century-long) plans? I love space exploration (my company runs projects in LEO, and has plans for t

What if that killer asteroid hits Mars while we make these (century-long) plans? I love space exploration (my company runs projects in LEO, and has plans for the lunar surface), but there are substantial issues that will not be solved in years or decades. The best backup we can provide is working toward a civilization that respects and honors our home and all the life we share it with.