Originally Posted by Paul Markham

To what purpose? Nothing was found on the Moon that was worth us going back. Nothing has been found on Mars to make living there worth anything.

The nearest maybe, possible, could be, planet with an Earth-like atmosphere is 4 light years away.

As for mining these planets or Asteroids for precious metals. Think of the problems getting megatons of whatever back to Earth. Then figure in the price drop in the commodity.

This is it, we have the Earth, there's no escape. Fix it or lose it.