Have you given any thought to when you might want to stop working?   Retirement is a bit of a dirty word for a lot of people. But most of us want, at some stage, to not have to work any more. To do that, we need a bit of money behind us.   At the moment, NZ Super is available to everyone over 65. But the prime minister has indicated that in future decades, that age of eligibility will rise to 67.   It's clear most people will need some money above and beyond what t...