Indeed, at that time behind the bank institution was not crowded because the market share was small and not obsessed because at that time it was a solid form such as coins or gold, even though it was promising if it was made a service (seen from today). But the tradition could be because there are some countries because of genocide and land is the best medium to secure assets, although yes we agree that pests and bacteria can eat away if paper money, in the 40-50 years as identical metal money, silver, gold etc. even if storing in the wall even for alternatives. In contrast to today, whose physicality is increasingly abandoned, of course, rent for security is also with qualified technology, even though in the past with simplicity but more calm and sound sleep.