Research has shown a staggering number of health benefits associated with dispositional optimism, from improvements in cardiovascular health, to how quickly wounds heal, to slower disease progression.
So many people say "I don't want to have kids because I don't want them to experience all the issues in the world today". What are they smoking?
We literally live in the best era we've ever seen in human civilization.
The most important technologies that no one is working on are optimism and beautiful visions of the future. A belief in technological progress must include giving people places and futures worth believing in. It doesn't come for free.