> It's remarkably pessimistic to argue that colonizing a new planet after two centuries of experience with industrialization, democracy, environmentalism, ex-colonialism, etc. under our belt wouldn't be at least slightly better than the situations we find ourselves in on Earth.

Do you know who will be still calling shots?

Politicians/Businessmen.

I am not even addressing the rest of your comment because that is quite frankly, very naive wishful thinking...You say that is pessimistic. But tell me, look around, do you see anything that make you feel even remotly optimistic?