>> Sometimes I just want to run back home and live with my parents, at the age of 32, and beg them to take care of me.
Well this doesn't sound like someone who is destitute and with no safety net whatsoever.
What's so wrong living with your parents? For most of human history it was the normal thing to do. Parents will take care of kids and one of them will inherit the parent's house and take care of the old parents. Have his own kids and have the grandparents helping with raising them.
Also I'm not so sure about UK but around here there's quite a significant rural population. Not everyone can or wants to make it in the big city. Life in the countryside is a lot cheaper, everything's cheaper. House prices are a joke compared to big cities and still villages get slow but steady depopulated.
On the other hand I do know people, excluding the homeless, who really have nothing. Father lost the apartment to gambling then disappeared, mother died, kid got evicted in the street in the middle of the winter, worked heavy construction jobs until got sick and had to file for disability and now all his income is a miserable pension that can't even pay for food let alone a rent in the city. And he's better off than the homeless or the gypsies who live off the city's garbage dump.
So I'm not saying the author has it easy but rather than some of it is a deliberate choice.