It's funny that with all this talk recently about the rise of AI and robots, we continue to just assume that space exploration and colonization has to be done with human beings.. As if we've already exhausted the most robots could do with rovers and satellites.
From a economic and safety perspective, it would seem far more practical to establish a foothold in non-Earth environments with robots that do the initial habitat construction for humans. I fear we are hand-waving much of the risk the first batch of humans we send to Mars have to shoulder - think the Roanoke Colony of the 16th century