Civilizations rise and fall. Ours is definitely in decline. Is there any stopping it?
Stopping, or even reversing the decline would take some cause or event to bring us all together for a shared purpose.
We were fully that way during WW2. We were somewhat in that zeitgeist right after 9/11. I don’t know what would do the trick now. Maybe if China teamed up with Krazy-Kim Jung Un against us and started blocking waterways for the hell of it.
It is unfortunate that it often takes undeniable disaster to make people cherish what they have.
Sort of like family promising to stay close while they meet each other at someone’s funeral. Some really mean it, others are just being polite for that moment.