Utilize your financial knowledge, give your answer or opinion to the input question or subject . Answer format is not limited.

Is inflation a good or bad thing? Why do governments want some inflation?
Basically, in any financial system that features fractional reserve banking, the monetary supply expands during times of prosperity. Stable, low inflation of 2-4% keeps capital available while keeping the value of money stable. It also discourages hoarding of wealth. Banks aren't vaults. They take deposits and make an explicit promise to repay the depositor on demand. Since most depositors don't need to withdraw money regularly, the lend out the money you deposited and maintain a reserve sufficient to meet daily cash needs. When times are good, banks lend to people and businesses who need capital, who in turn do things that add value to the overall economy. When times are bad, people and businesses either cannot get capital or pay more for it, which reduces the number of times that money changes hands and has a negative impact on the wider economy. People who are trying to sell you commodities or who have a naive view of how the economy actually works decry the current monetary system and throw around scary words like "fiat currency" and "inflation is theft". What these people don't realize is that before the present system, where the value of money is based on promises to repay, the gold and silver backed systems also experienced inflation. With gold/silver based money, inflation was driven by discoveries of gold and silver deposits