I know this is a very unpopular opinion here at Ars, but our space exploration dollars are substantially wasted sending human bodies into space vs robotic explorers.
If you are worried about a "backup" for the human population, there are probably much cheaper things we can do to make our population more sustainable and guard against existential threats (asteroids) - and those things should be done. But, if you are just interested in the glory of putting human bodies on other planets, that's great, please spend your own money in pursuit of that goal.
