This applies to adults, too. When you're really poor, it's actually a reasonable strategy NOT to keep money but spend everything as soon as you hit pay day, for

This applies to adults, too. When you're really poor, it's actually a reasonable strategy NOT to keep money but spend everything as soon as you hit pay day, for instance on storable food. Why's that ? Because money on your bank account can be seized, because you're late on rent, or because you unexpectedly got fined because your rusty old car has a broken light, etc. Food can't be seized, therefore at least you know you'll eat next week, even if it's only cheap pasta and canned sauce, and Nutella basically lasts forever.