I agree, at least for the post-1945 Collective West it was, but we planted the seeds of our fate long ago and we are now ripping it consequences.
Monetary debasement and fiscal irresponsibility
External imperialism and violent overstretching
Moral/spiritual/cultural decadence
Uncontrolled immigration
Self-Complacency and cognitive decline
I hope to be wrong but i think other civilizations wont be so merciful for our crimes/weaknesses.
Even if as individuals many of us are definitely innocent, collectively we carry responsability, expecially in the eyes of more collectively-centered civilizations.