https://en.wikipedia.org/wiki/O'Neill_cylinder https://en.wikipedia.org/wiki/O'Neill_cylinder These are possible (if not remotely practical) with our current l

https://en.wikipedia.org/wiki/O'Neill_cylinder https://en.wikipedia.org/wiki/O'Neill_cylinder These are possible (if not remotely practical) with our current level of materials science and solve for both the gravity and cosmic ray/radiation issues. There's lots of other designs that should go larger, but require further advancements in things like carbon nanotubes, etc. to be possible. As for why it would be better - control. No worries about pollution. No worries about earthquakes, volcanoes, or other natural disasters. No droughts, no hurricanes, no tornadoes. No one is talking about living on space stations like the ISS - we're talking about building purpose built large scale structures that are designed from the ground. And these aren't things that are the realm of science fiction authors and futurists with no grounding in reality or physics - they're things that have been and continue to be seriously researched by NASA and other space agencies.