"Among adults between the ages of 36 and 40, 53% say they are either 'not too' or 'not at all' confident that their income and assets will last through retirement. In contrast, only about a third (34%) of those ages 60 to 64 express similar concerns, as do a somewhat smaller share (27%) of those 18 to 22 years old," according to a 2012 Pew survey.