You probably know that you are living in a country with a large number of older people.
Older people need more treatment and care, more often, and for longer.
Healthy young workers generally don't
You might be surprised to learn that private health insurance for older people increases in cost every year, and can easily exceed the state pension. Perhaps that doesn't worry you because you are a rich man and can afford to pay hundreds of thousands of pounds during the course of your retirement, or perhaps you intend to die as soon as you stop work.
It is perhaps ironic that the sector of the population most keen on cutting and avoiding tax, is that same sector most dependent on public spending.
Some of them also resent healthy young people willing to provide care at low wages.