Generally speaking, the issue of coins is related to the economic development of a country. The coin circulation in developed countries is large, while that in underdeveloped countries is small, which is mainly related to economic development. If a large number of coins are issued blindly, they will depreciate. The devaluation of coins will bring a series of social problems and easily lead to social chaos. You may not understand. Let me give you an example. For example, the average monthly income of a family in a country is 1000 yuan, and a bag of rice is spent in 80 yuan. Later, the country issued a large amount of RMB, and the average monthly household income became 1 10,000 yuan, but a bag of rice also rose to 800 yuan. In other words, a large number of coins can not solve the problem of wealth in the country, but can only be changed by economic development. I hope my answer is helpful to you.
Supplementary information:
The country's currency circulation must be carried out according to certain rules, otherwise it will bring various adverse effects, some of which are fatal. Therefore, the currency circulation will generally be adjusted according to the changes of some nominal variables such as GDP or CPI. This is a fixed rule, and of course there are floating rules.
It is extremely dangerous to issue money at will. Below I will talk about my views on several aspects, and you can think for yourself.
As you said, it is very convenient to buy things after earning money, so every extra yuan issued by the state is actually equivalent to compulsory tax collection from currency holders in disguise, which is the so-called "seigniorage". Extra money will bring inflation more or less, which is equivalent to imposing a second tax on currency holders, the so-called "inflation tax". Therefore, a currency issue is equivalent to imposing two compulsory taxes on current currency holders. Taxation is reasonable at any time, but this kind of compulsory and unconscious taxation is extremely disgusting. Countless exorbitant taxes and levies can destroy a country, and indiscriminate money will have the same effect.
There is only one way to destroy a country by issuing money indiscriminately: inflation. Mild inflation (prices rising slowly and steadily) is considered by most economists to be beneficial to a country's economic growth, but hyperinflation (more than 50% per month) can destroy a country's economy at the fastest speed.
Hyperinflation has many extremely bad attributes, and the source of all these attributes is one of its most essential features: it can immediately make any of your current economic activities worthless. This will make all workers stop working, because it is not worth it. When everyone stops working, a country ends. At this point, inflation is no different from war, or even worse.
This is also the reason why hyperinflation countries are on the verge of chaos.
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The above is basically the essential reason why the country cannot print money at will. After all, fear of printing money is fear of inflation. So as long as you answer the disadvantages of inflation, you basically answer your question. So I will add some specific disadvantages of inflation below, whether it is moderate inflation or hyperinflation.
1, cost of leather shoes.
2. Menu cost
3. Arbitrary distribution of wealth (the consequence of this unexpected inflation)
4. The guiding role of price is lost.
5, extremely inconvenient
Wait, these are just some disadvantages of inflation (I can't think of others at the moment). All these disadvantages are determined by the basic nature of inflation. So you understand the content above my dividing line, and you can infer the following small shortcomings yourself.