i think moon population is highly probable the only main problem wich is oxygen supply and that matter can be solved quite easily trees and plants turn carbon dioxied into oxygen so all we have to do is fill aroom with carbon dioxide put a couple plants and the start generating oxygen. then once there is enoughf start bringing in people and more plants and walla one problkem solved. also i think many goverments will be willing to spend millions to make this possible becouse it will reduce over population on earth then once moon habitation is proved possible other planets will start being populated and by then space travel will become if not common but not completly uniqe. this is my opinion and if u dont agree go ********** urself