If you find yourself classifying the goal for where you want to bring the world as "fantasy", you either should update your estimates of what can be real, or exclude the fantasy goal. Don't waste hope on unreal things, but see the real potential in absurdly good things to come (to do). Explore how you'd like the world to be within what's possible, and make sure that your model of what's possible includes the wonders that are possible. That will make your worldview that much brighter and that much saner.