Asteroids are indeed much more dangerous because no atmosphere exists to protect machines and human from space scraps and lights. That said I think human need

Asteroids are indeed much more dangerous because no atmosphere exists to protect machines and human from space scraps and lights. That said I think human need to be multi-planet to be able to survive big disasters. And asteroids as a small scale space station has its own benefits compared to planets or space crafts. Guessing as a 21st century human of course :)