Cultural differences
I don’t exactly understand why westerners find it embarassing if kids stay with their parents after the age of 20-22. Greek kids usually leave for a few years after high-school to study in a college or university (and males have to leave home for military service too for at least two years). But when they come back, they (usually) move back to their parent’s home, even if they find a job in the meantime… Then, they get married and usually rent a house or they stay with the parents for a while if they have to wait for their house to get built (in Greece, building a house is prefered over buying an older house or apartment — outside Athens where there’s space to build that is).