In my early twenties, after dropping out of faculty but before I started working, I was often literally hungry while my parents were not really millionaires, more like quite well-off. I guess they thought keeping fridge constantly empty will make me go out and look for work (I did not until 26, just traveled, couchsurfed and partied around). Ironically, I often ate at my best friend's whose parents were on the edge of poverty, but supported him (and me) with all of little they had.