I hear you, the world is always ending. But, I am well past mid-life, I am a huge beneficiary of Pax Americana, and 47 feels like something truly different. Maybe it's just the end of a long pattern, but it is still the end. US-led NATO is dead, and the stability of the USA is dead, therefore the dollar's dominance is weakening.

Don't take my word for it. Listen to Mark Carney at Davos.

I think there is a realization that (1) US' checks and balances do not work, (2) Trump is not a "mistake" of voters and can repeat again.

This is the main reason that things are different. Most presidents were reasonable in their hegemony, and Trump's naked aggression makes everyone to hedge against US.