Younger generations don't have a lot of faith that Social Security will be available to them when they retire. 

About 23% of Gen Z (those born in 1997 or later) and 26% of millennials (born between 1981 and 1996) believe there's little chance they'll be able to rely on Social Security to fund their retirement, according to Northwestern Mutual's 2020 Planning & Progress Study. That's compared to just 7% of non-retired baby boomers (born between 1946 and 1964) who similarly believe it is not at all likely Social Security will be there when they retire.