What did people do before 1971? Work for a summer and then you can buy your car. Much better than having to repay a debt in something that increases in value over time. There will always be financially illiterate people that take on debt to buy consumer goods, but the incentive will be to buy consumer goods out right 

 This is unlikely because simple labor is already of unsustainably low value now and it will get worse in the future.

Skills of today are engineering, entrepreneurship and the likes. The rule of 10,000 applies.