Same with Coke Zero, That said, my wife bought a case at the beginning of the year and there are still about 18 of them left. Problem with diet sodas is they still spike an insulin response just like the sugared stuff. Your body doesn't know the difference. The artificial sweetener basically does the same thing. But hey man I feel your pain, I still crave the sugary stuff. Its as bad an addiction as drugs, or alcohol, but societally accepted. Sounds like however there may be rustlings of change brewing.
FWIW, Mankind started to decline from a physical perspective 10K years ago when agriculture was developed...IMO.