If the government didn't use the feeble excuse that a pension needs one to work longer for in order to cover the cost, then folk could retire earlier allowing more presently unemployed people to find work, making them less of a drain on society and a net contributor, which in turn helps society to afford to look after the old and vulnerable. Ultimately though, there are only so many employment opportunities at any one time, the trick is to ensure they generate enough wealth to reward those creating it and top up the coffers for the costs society has.