Humans are optimized for life on Earth. Expecting the organism to work property off Earth is foolish. The body was not made for space. It was made for Earth.
Colonizing other planets is immoral, because the people-to-be-born are forced to live in a hostile environment, and they were not given the choice.
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Trust me! There will never be any colonization of any other planet.
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Nope, humans weren’t made for space. Nor were they made for arctic tundra or vast deserts or highland steppes or any of dozens of other climates or biomes that humans currently occupy. Humans adapt.
This country was built by people who dragged and made children from the wild New England coast to the rugged Appalachian mountains through the wild plains to the Rockies and the west coast. All along the way were struggles and dangers, hard work, starvation and disease. Was that immoral? If it was then where would this country have come from if they hadn’t done that?
I am not saying we necessarily will colonize other worlds. The technical difficulties may be insurmountable especially as our civilization seems to be in an existential crisis and on the verge of collapse. But if we can get out there are so no reason not to just because it will be difficult, dangerous and hostile.
Colonizing other planets is immoral, because the people-to-be-born are forced to live in a hostile environment, and they were not given the choice.
Speeding over the ground is immoral, because the people-to-be-born are forced to live in a hostile environment, and they were not given the choice.
Floating on the ocean or lakes is immoral, because the people-to-be-born are forced to live in a hostile water environment, and they were not given the choice.
Flying in the sky is immoral, because the people-to-be-born are forced to live in a hostile environment in the sky, and they were not given the choice to stay on the ground.
Unless there is a way back to Earth, yeah.