This thread has me thinking about grandparents though. Out of my dc's 4 grandparents, we get the following:
M teen & young adult before WW2: probably had to be quite tough, disappointed in career dreams because of disability, did badly paid manual work and earned little, married and divorced
F teen & young adult during WW2: evacuated with boarding school to America where she had a very cossetted and luxurious existence, found it hard to deal with bleak reality of life in UK on return
M young boy during WW2, teen shortly afterwards: poor background, lost father at an early age, love of learning, studied on scholarships and not much food to become a teacher, for the rest of his life very comfortable
F young girl during WW2, teen shortly afterwards: cosseted and spoilt by family, lived at home until marriage, chose a safe career, never experienced financial insecurity or any other serious threats to happiness, looked to her mum for guidance until her 40s (when her mum died), only time she ever lived outside of supportive family was for a summer at a residential language course around age of 20, and for a year abroad accompanied by fiancee (again residential so no need for arrangements)
That's just one family tree. A couple of pretty tough people, at least one who was more protected than most young people would be today.