So many people cross a threshold after which they just fucking despise people younger than them, thinking they are worthless, lazy, & badly-behaved.
The wild thing about it to me is that this is a continuous process: we experience the alienation when we are young & then turn back around & do it to the generations after us.
Ironically, it's a repeating pattern passed down from generation to generation. It's also unhealthy as fuck & creates unbelievable resentment on all sides.