Really? This was common place in the USA until FDR and then LBJ put the nails in the coffin on family interdependence. The family as a whole enjoyed a higher standard of living by pooling resources. Kids had adults living in the home 24/7 to guide them. It helped young as well as old and those in between. Often the home was paid for as well. USA was not a third world nation or anywhere near it either we were the leader in the industrial world. Granted some in the family eventually moved away etc but they were often in a much better position to do so not working entry level jobs but had established their skills to obtain better wages to support themselves.
When FDR replaced family including the households father with government dependence our national woes and down spiral began a rapid decline. It also put mothers into poverty and often no adults in the home while single parent mothers had to work. NO actually gubermunt replaced what worked throughout mans history with government programs. Colleges and universities helped add to the fire by making family look like a non necessity.
Can’t afford to rent? Buy a house where you will have REAL expenses. The gubmint will give you the money. sarc.