short answer: because that's what we are unless we know better, because someone kindly slipped us a clue.

or spiked the punch, whatever...

'The history of public debt is full of irony. It rarely follows our ideas of order and justice.' Thomas Piketty

... why are we behaving like unconcerned morons?

Well, as one of the we I discovered that maybe .01% of people represent the real trouble makers (ultrawealthy/corporate higher-ups), another 99% would join that crowd given half a chance, and the rest of US realize that we are woefully outnumbered regardless of what we say/do.

What do you wish for the terminally ill?  A quick painless death.  What do I wish for the human species?  The same.  And that's being merciful given what you've done to the planet.

They tried to assimilate me. They failed.