> It may seem that way if you are healthy, high-earner, and young.
Interesting tidbit that many people tend to forget about: Health care payments are capped. The maximum monthly income that gets counted is 4425 EUR/month of which about 14% get paid in total. So if you earn 10k a month you effectively pay a lower rate. The effective health care rate drops for high-earners.
The contributions are not extortionately expensive. It may seem that way if you are healthy, high-earner, and young. But looking at the actual cost of providing healthcare it's pretty competitively priced. Over the lifetime of a person private health insurance is not that much cheaper. You can view the difference as a tax supporting the poor and chronically ill if you like.