While the rest of the world is busy eliminating human beings from dangerous work sites (factories, mines, etc.) it seems counter-intuitive and wasteful to focus on sending humans, and fund research in this direction (with space suits, life support modules, etc.) instead of focusing on developing more agile robots that would be able to do assembly and maintenance (even if they are not really completely autonomous but remote controlled, like surgery robots).
I get that latency could be an issue ultimately, but here we're talking about the moon (3 seconds RTT).