I agree credit can be very useful and good, but most people are not using debt to try an investment that allows them to pay back the debt and make some profit. They are buying consumables: dinners out, clothing, gadgets, vacations, cars, even housing is really a cost of something you are using. A depreciating asset and not an investment. I think it would be really good to use some of this education everyone gets to get across the fact that consuming using debt with is very bad. Some counter to all the other marketing in the world that says, "Buy, buy, buy". Not immune to it myself.
The problem again is that consuming using available funds is not possible if you need to work 10 years of median salary for it - that in the more affordable states.
The figures mentioned use full salary, in reality you might get some 50% of that possible to allocate to paying off the debt. You still get to pay utilities, cost of life for the family, transportation, education and probably extras.
Note I've even ignored any savings - and with high mortgage debt, you can be wiped out by any more expensive health problem.
True; house prices are crazy high in some areas. A decent 3 or 4 bedroom house can be built for 100-200 thousand dollars. In these expensive places, land is the major cost. People can bid up the land cost of housing because of loans especially ones with low down payments. If people had to have %50 down, like not that very long ago, buying a house would be much more inline with incomes. Anywhere where rent is much cheaper than house payment + prop tax + upkeep, the prices are being push higher by home ownership subsidies/lock out of one kind or another.