You've probably heard that most Americans aren't saving nearly as much as they should for retirement. But it's not just carefree 20-somethings putting retirement savings on the back burner. According to a recent survey by GoBankingRates, about 30% of those 55 and over admit to having no retirement savings whatsoever.Meanwhile, 26% report having balances of less than $50,000, which is far behind where the average person in that age group should be.