In our solar system there are plenty of destinations to go to, projects to do. Like mining the asteroid belt and moving all the heavy industry that produces CO2

In our solar system there are plenty of destinations to go to, projects to do. Like mining the asteroid belt and moving all the heavy industry that produces CO2 or other pollutants to space. Make space flights as cheap and reliable as commercial flights on Earth. And so on. These you can solve without FTL.