its not one or the the other though it is very possible to do all of them. build floating Venusian bubble cities, make O'Neill cylinders orbiting around every celestial body of note, while building tunnel cities on mars and the moon and hallow out asteroid and build Stanford Torus in them . We are planet of over 7 billion people we can do more than one thing, and the more varied and distant the baskets humanity is spread to the better.

And NOT doing it is a good idea? Like the world governing fuckheads have their heads out of their asses yet after 30 years of the IPCC being validated?

Like we keep being told that population will level out, but I've seen, what, HOLY CRAP, 4 billion people added since I was born, 3.7 --> 7.7.

Because we are totally on top of species depletion? And the world government totally is stable with China and Russia and the US and EU and North Korea and Islam-land and everyone trying to get nukes?

You know what is mind blowingly dumb? Wasting a trillion dollars a year on defense spending, in the US alone.

With China starting to get greedy over space, I think we'll see plenty of investment soon.