I selfishly would rather invest in mining asteroids so that we may one day be qualified to manipulate their movements and prevent strikes of any planets in our solar system and to get rich of course. Even if it takes a few hundred years to become qualified for such mining that is a tiny blip in this spacetime and could mitigate at least some civilization ending events. The process of heading that direction is likely to result in many advancements in technology and slightly safer playgrounds to develop more intelligent androids assuming they don't get hacked resulting in dragging and flinging 20+ mile wide metal asteroids at us.