nothing better than letting the earth be destroyed so that the idea of multi-planetary life has relevance. better future for humanity is have a better earth
What a load of nonsense. Going to space lets us have a better Earth! Even at a simple level, we use satellites to monitor sea level, methane emissions (even identifying leaky pipelines from orbit!), atmospheric levels of CO2, NO2, SO2, etc., vegetation cover, ice cover, and on and on.
https://en.wikipedia.org/wiki/Earth_observation_satellite#En...