eighty is the new 120

for the past ten years ive been hearing that 40 is the new 30 . so does this mean that 30 is the new twenty? is 80 the new 120? these are all great pickup lines (take note guys) but is this really true? alot of single men over 35 act like they are a young 75.
i think that people in their thirties and forties today are experiencing a longer period of delayed adolescence than those who were in their thirties and forties twenty years ago. these days people get married later and have kids later extending the less fettered by responsibilities mindset previously reserved to those in their early twenties.
people these days tend to take better care of themselves than people twenty years ago, hence the more youthful appearance.
ive always had older relatives who were young at heart so im not sure what all the commotion is about. its all about one's mindset. always has been, always will be.
hopefully this new youthful attitude revolution will continue. its no fun being around 28 year olds who kvetch about their aches and pains more than grandma moses.