Re: 'We'll be gone long before' . . .
The ultimate freedoms will be : freedom from Earth's gravity, from Earth's atmosphere, from water, from normal temperatures, from a limited time to live.........
We might not need to leave the Earth at all, once the Sun inflates...We might accept whatever natures presents to us.
But then, we won't be humans anymore...Perhaps it won't matter by then.
Raoul