The future always looks bleak for humans, which is just part of the human experience. But today, we have the most material and technological abundance in history and people gesture vaguely at a long term time horizon problem and think "it's over". It was "over" during the Great Depression, and it was over before that during Spanish Flu. And before that during the Thirty Years War and the Black Death, and so on back to the Great Floods of mythology. Luckily, they didn't give up.