I don't think this phenomenon is limited to Europe. I'm 31, I have an advanced degree in a highly technical field, and it's unlikely that I'm going to earn enough money to afford to buy a home (w/o ridiculous leverage) in the places where I can find work in my field.
When my parents were my age, they had two children, a house and two cars on a single electrical engineer's income. There's no way that's possible today.