I think if we achieve the ability to be self-sufficient in space it's our responsibility to try to reduce our resource consumption on earth and preserve it, jus

I think if we achieve the ability to be self-sufficient in space it's our responsibility to try to reduce our resource consumption on earth and preserve it, just as much as we preserve any part of our history. However, as we are currently dependent on our planet for survival and its fate is somewhat at stake, it is our first priority to insure against it. After that we have a couple billion years before our solar system poses a threat.