then we could love and blame everything on NANOMACHINES
No more responsibility!!
Better idea:
Humans will make more and more technological (notably robots) which make life perfect.
Robots do all the work, money is not necessary anymore.
Food and all other necessities brought straight to people.
People become lazier and lazier and the world becomes like the life on the Axiom on Wall-E.
Reproduction gradually stops and people cannot walk due to bad habits.
People die off after a couple generations.
Robots have problems and shut down.
The universe has its way with the planet.