It's a real place. The ISS is not a "place" - it's something we put up there. It's the difference between going to the woods and camping on your mother's lawn.
Besides that, if we can manufacture spacecraft parts on the Moon, launching them is much easier than launching from Earth. You can even use a maglev rail to launch stuff from there - no reaction mass involved.
Besides that, if we can manufacture spacecraft parts on the Moon, launching them is much easier than launching from Earth. You can even use a maglev rail to launch stuff from there - no reaction mass involved.