Started to write something here, then realized that smarter people than myself have already said most of it.
From a long time ago: Our youth now love luxury. They have bad manners, contempt for authority; they show disrespect for their elders and love chatter in place of exercise; they no longer rise when elders enter the room; they contradict their parents, chatter before company; gobble up their food and tyrannize their teachers. -- Socrates
More recently: "Young men think old men are fools; but old men know young men are fools." George Chapman, All Fools, 1605
Even more recently: "Each generation imagines itself to be more intelligent than the one that went before it, and wiser than the one that comes after it." George Orwell
So it's not like there's anything new going on here. Oh, that lazy, good-for-nothing next generation! Oh, those foolish and feckless youth! If only they were more like us, and less like themselves!
But...
"To have lived long does not necessarily imply the gathering of much wisdom and experience. A man who has pedaled twenty-five thousand miles on a stationary bicycle has not circled the globe. He has only garnered weariness." Paul Eldridge
"The older I grow the more I distrust the familiar doctrine that age brings wisdom." H. L. Mencken
"The surprising thing about young fools is how many survive to become old fools." Doug Larson
And that's about it.
pax