1) We have been around less than 1 million years. Our industrial revolution began less than 300 years ago. We constitute 0.01% of earths biomass, yet have destroyed 83% of wild mammalian life https://www.pnas.org/content/115/25/6506 We have polluted the oceans to the extent that plastic bags and radioactive fallout from WW2 can be found in the bottom of the Marianas trench. We are in a mad rush to burn the accumulated carbon reserves from millions of years inside of a span of decades. We are currently on a trajector to turn this planet into a place inhospitable to most life forms, including ourselves. https://xkcd.com/1732/ Last year was the highest carbon-output year on record, just as the year before was, and the year before that one.

We are utterly destroying the only known home to life forms in the universe. We are doing it rapidly.

You seem to be living in a delusional parallel reality in which establishing a space society doesn't consume the resources of our ONLY current home planet and doesn't pollute it.

We must change our ideologies, our thought patterns, our cultures, and our entire industrial societies patterns and habits (not to mention energy source) within the next decades to survive, let alone thrive or develop further.

I don't get the sense that you comprehend our actual condition on this planet. There is a very very steep footprint curve with regards to both our population (There was roughly 1.5 billion of us the last time we all tried to kill each other, World War 2. Now there are 7 billion of us. Before, the consumption footprint of a person was rather low, now each person consumes more resources than ever before, and this amount of consumption continues to rise. The Chinese middle class will surely want every accessory their American counterparts have, right?)

How has this entire predicament avoided your scrutiny until now?