Think about everything you will pay to support Medicare: the payroll taxes while you are working, the premiums during retirement, and your share of the income taxes that subsidize the system. Then compare that to the benefits of Medicare insurance, say, from age 65 until the day you die.
Are you likely to come out ahead? That depends in part on how old you are. If you are a typical 85-year-old, for example, you can expect about $55,000 of insurance benefits over and above everything you have been paying into the system. If you’re a typical 25-year-old, however, you will pay an extra $111,000 into the system, over and above any benefits you can expect to receive.