About being 'not too old': 45 is an average, meaning there will be more or less just as many around 60 as there will be 30. At ~55 the kids will be gone, givi

About being 'not too old': 45 is an average, meaning there will be more or less just as many around 60 as there will be 30. At ~55 the kids will be gone, giving you even more time to start up something.