I would say that they need to save better and we need to utilize the money better.
A fun thought experiment, is to take the part of your salary that is going toward your retirement. Let's say that each year 2000 GBP goes toward your retirement out of your payroll tax.
Instead of it going into the government pyramid scheme called retirement (which is illegal in the private sector, but not in the public), imagine that it is invested in a no cost index fund in the stock market.