There's a lot of people living with their parents because "Property is too expensive" when the reality is they don't even try. They don't want to experience any hardship or a step down from where they are living. I witnessed this for example with my youngest brother instead of saving money to stand on his own two feet it was all the latest Apple mac gear, branded clothing, new car and long weekend holidays with his friends. I had him living with me for a while, super low rent like £50 a week and 50% of the bills. I assumed I was helping him out and he'd save, but nope..
Eventually he lucked out and became this toyboy for an older female banker. She was textbook bitter old woman who had focused on her career and even though they were a couple she was not going to let him move in to her big house until he earned a comparable amount to her, he was a graphic designer so that was never going to happen. I forced her hand by kicking him out, tough love. So she had to let him move in and now he has a new mummy looking after him. DINK life of course because, circling back around to the avoidance of any hardships.