The storage of value is the goods the currency didn't buy. If I buy a can of beans and eat it, that can of beans is gone. If I instead save my money, that can of beans is still there.

When you do work, you are paying into the economy, providing goods and services for everyone else. When you spend your money, you are taking out of the economy, cashing out the value you deposited. When you hoard money, the economy has the benefit of the goods and services you provided to get that money but hasn't had to pay you out. You have invested in the economy as a whole at that point as your goods and services provide benefits to others that grows the economy as a whole. At some point, you spend that money and cash out the investment of the goods and service you provided.

Under ordinary circumstances, deflation reflects a healthy economy. You invested goods and services into the economy and then deferred withdrawal, earning interest because your contribution to the economy continues to make possible other economic growth.

The myth is that spending grows the economy. In fact, spending withdraws value from the economy. There is no difference between your buying a banana to eat it and your buying a banana to destroy it. That consumption grows the economy is our old friend the broken window fallacy. It is production that grows the economy.

In an economy that isn't manipulated by people with guns, deflation reflects the return on investment of deferred consumption -- providing value and then not taking one's compensation until later.