In current countries scenarios, at least a little inflation is important to economy because that encourages people to buy goods and companies to make products instead simply save money. A cold economy can bring a big crisis to a country.
Why would you need to artificially enforce a rule like that, making people buy stuff they don't need.
In a perfect world, people buy goods they need and save money when they don't need them. Inflation is a tax imposed on everybody, especially hard on people who own money. It's like a tax that punishes you for saving, or punishes you for being rich. Is that a bad thing? IMO rich usually means smart and successful. In nature dumb people, if they happen to inherit wealth, will often lose it due to bad choices.