Do you need to buy social security and medical insurance after 80s?

At present, employee social security is obviously superior to urban and rural residents' pension insurance, commercial pension insurance and self-pension storage. Because of employee social security, there is an obvious government social security department to collect and issue it, which is more reliable than commercial insurance companies. Generally speaking, self-payment can be recovered in less than five years. The longer life expectancy, the more income you earn, and you can receive funeral compensation until the end of your life. Due to the social security principle of paying more and getting more, the monthly pension is much higher than the old-age insurance for urban and rural residents (including the new rural insurance).

For people who don't go to work, buying social security can mainly solve two major problems, one is part of the medical expenses, and the other is the pension after the statutory retirement age. At present, the condition of receiving pension in China is continuous payment 15 years. People who don't go to work pay fees, mainly because they bear the social security fees themselves, and employees have a company to bear part of them; So it's not worthwhile for people who don't go to work to pay social security themselves? Of course not, because the state will subsidize all the insured. Generally, after normal retirement, you will receive more pension than you pay, and everyone will face the problem of providing for the elderly in the future. Even if you don't pay social security, you should prepare your own pension. What's wrong with paying social security and getting subsidies from some countries?