Is it better to buy commercial insurance or social security?

Social security is not compulsory, including commercial insurance. What you said about unemployment, childbirth and work-related injuries is useless to you. But can you promise that you won't get sick? If you can't guarantee it, you'd better buy it, because social security can help you bear most of the expenses once you get sick and hospitalized. Social security is the welfare given by the state and the minimum guarantee for people. So why do people choose some commercial insurance to supplement their social security? In this way, if the production costs can be fully reimbursed except for self-funded drugs, insurance means taking small risks. You just graduated and are ready to start a business. I suggest you buy social security, if the economy allows.

Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.