Harnessing the resources we have
Well Humans have harnessed and many times messed up the resources we have had on Earth.
On Moon we dont want that as our backyard of all the junk.
One way that is also sensible. Send all the junk tires and plastic e-waste to Moon, one good thing, there is no air or water to pollute and its not going to pollute its soil too! No interaction with life to create mutated beings.
Yes its a good idea put solar panels charge up batteries and bring to earth or use it to power satellites using lasers.
To me all toxic substances the world has can be put there to clean up earth. recycle and bring to earth.
After all 35+ years since our lunar expeditions I don't see what that science really helped human civilization.
We travelled we gained knowledge of how to reach there and I don't know other than stories of astronauts walking making experiments on zero gravity how much did it contribute to science than what we could have done all on earth itself.
Mars missions insane! and spending on Black holes and understanding distant stars which will be lightyears away imagining to travel using timewarps. - Will they be funded in our life time? Better think of cleaning up the toxic on earth rather than sending to 3rd world countries to polute them and expect them to clean our mess send them to moon keep them stocked there till we find a science solution to recycle without doing more damage on earth. IN 5 DECADES 1 THING WE KNOW ONLY 1 EARTH! No life anywhere else! Not even planets with Dinosaurs anywhere insight for a million lightyears away!