For future generations to fulfill the hopes of the modern generation, it's crucial for the modern generation itself to respect the aspirations of the past.
One of Jupiter's satellites is called Ganymede. If it were to fall onto Jupiter and disappear, what would be the loss for humanity? This is what world politics should sometimes ponder.
The meaningful life of humanity encompasses the integrity of its unity, enlightenment, well-being, and flourishing, all for the happiness of every individual and the assurance of a long-term future.
If we define the "complete well-being and flourishing of humanity" as the highest universal value of the human world, it must inherently encompass one of the most crucial spiritual ideas: "a reliable distant future."
To colonize habitable exoplanets, humanity will need not just one millennium. There is time for this, as planet Earth, with careful treatment of nature, will remain habitable for tens of millions of years. But for this, what is primarily important is the fullness of love for life and dreams on planet Earth.