I'm not sure what's simple or understandable about a basic staple of life whose real value is skyrocketing. It's not at all clear whether the next generation will actually be able to afford housing at anywhere near current valuations. Maybe future Americans can afford to allocate a greater share of their incomes to housing, but the economic effects of the disappearance of all non-housing consumer spending (as mortgages approach 100% of paychecks) might not be great for home values. Who knows? Anyway, not simple.