As a species we are way too immature, but we rush into everything head first without thinking of the long term consequences.
We should be concentrating on cleaning up all our mess (plastics in the ocean, space junk etc) and transitioning to renewable Hydrogen and Oxygen extraction for use in everything (cars, electricity production etc) (including Oxygen solves the Nitrous Oxide problem in combustion and all the extraction can be done using renewable sources in the oceans and reverse osmosis filters so the water is pure.) before considering colonising other celestial bodies.
We need to lessen bigotry to near zero and stop letting the greedy, slaughter people on a whim, just because they want more real estate. So that we can work together as a planet. History has shown that if you migrate to get away from war and conflict but bring the feuds with you, that you will always be trapped.
Don't worry though. If the scientists are right, then the poles are going to flip in our life times and allow the Sun to irradiate most of us, so that should solve most of our problems.
Best any of us can do is treat others with kindness and hope that that kindness spreads.