My guess is that for the most part, the moon or mars will remain uninhabited. It will eventually become a source for mining and launching cheaply trillions of t

My guess is that for the most part, the moon or mars will remain uninhabited. It will eventually become a source for mining and launching cheaply trillions of tons of materials. Humans will only really "colonize" huge castles that can house billions, gigantic structures assembled in space from lunar materials and launched from magnetic rails, bit by bit, assembled directly in their useful orbits (cyclers maybe?). With bigger and bigger mirrors and solar panels pointed at the sun, there would probably be no limit at the distance those could be from the sun.