New data shows that 60 per cent of us are worried personally that we will not have enough funds for a comfortable retirement, while more than 90 per cent of us think it is a problem for the nation. Women are more worried than men, and young people, who have the longest time to save up, are vexed about this too. Are we being overanxious and how much money do we really need once we step away from work? Listeners and experts join the nest egg conversation.