When retirement savings goals seem hopelessly unrealistic

`` ... a recent Nerdwallet study said that if investment returns drop from their historical averages as many experts predict, Millennials may need to save 22% of pay a year to build a nest egg large enough to support them in retirement. That's right, 22%!... Throw in even a modest Social Security benefit that assumes payments will drop considerably from today's levels, and I estimate the savings target drops to about 15% a year (which, granted, many people may still consider a challenge).''