Search for Isaac Arthur's video on "The impact of nuclear fusion", then the video on Arcologies/vertical farms. You'll learn everything you could possibly want

Search for Isaac Arthur's video on "The impact of nuclear fusion", then the video on Arcologies/vertical farms. You'll learn everything you could possibly want to know about why we aren't going to space en masse right now, and how fusion changes the economics of basically everything. Of course, you might disappear down the awesome rabbit hole that is his Youtube channel.