wasted life
When a person's life achievements are so insignificant that they reach the age of 40 and their life has amounted to literally nothing.
Peron A: Feel bad for Bill...
Person B: why?
Person A: Guy is over 40 and his life has amounted to posting on fb all day. Talk about a wasted life.
Person B: Definitely.

Person A: Yea, dont be like Bill