Yes. It is unsustainable. We need more people working than not, whether they are claiming benefits or not. A welfare state has to have more contributors than claimants, or there is not enough to go round. We all need to pay for police, education, health, defence, roads etc, and there has to be enough left over for pensions, benefits and things like sick pay and maternity leave. We have an aging population, so unless we want people to work till they die, we have to have more working age people in work, and not expecting others to do their share for them.