Money is not meant to hoarded, it is meant to be invested. A healthy economy is one in which there is continuous flow of capital circulating around. If nobody bought things or invested their money, there would be no new jobs/businesses being created, and the economy would stagnate. This is why zero inflation (and even deflation) is bad - it encourages hoarding. Thus, inflation encourages people to invest and actually spending your money, because in the future the purchasing power of their money will be lower.
100 years ago, $100 was a huge amount of money - it might buy you several houses and a huge amount of land. Imagine you kept it and did nothing like you suggest for 100 years. That $100 today isn't even enough to pay for rent. Had you invested that $100, it might've kept its relative purchasing power.
People generally only have about 10-30% of their assets as liquid cash as a safety net. Most of your money is meant to be invested and put to good use, not stored in your savings account.
If you look at zimbabwe or venezeula, the hyperflation there is so bad that if you don't spend your money immediately, it becomes worthless in a few days time. So they won't be "rich as @#@#@", they'll actually be poor as @#@#@.