Well, we already know that average human intelligence has peaked. The consequence of preventing starvation in Africa has been to drastically increase the low-IQ population. IQs are falling everywhere from Great Britain and Germany to the USA and South Africa.
Forget colonizing space. The West will be lucky to come out of The Great Endumbening with functional indoor plumbing. Mark my words: civic nationalism will eventually be understood to be a more foolish, more societally destructive concept than communism. It is only surpassed in that regard by feminism.