if you are retiring early and plan efficiently then the only difference between delaying is in being more stock market dependent or more longevity dependent if you count on portfolio income as well with the social security . ..
if you file early more of your income comes from your own resources down the road and less from uncle sam .. your ss check is 70% bigger at 70 then at 62 .THAT CAN BE A WHOLE LOT LESS DEPENDENT ON MARKETS AND RATES .
most of those who take ss early and count on portfolio income are rolling the dice on their portfolio's doing well and markets and rates being able to support them in tough times . the higher draw creates higher sequence risk .
so you are rolling the dice either way , you either need to be lucky with markets and rates or lucky with longevity..
i doubt there will be any ss reductions in amounts and if there was it would be across the board effecting everyone collecting or not ..like everything congress does they will fully fund ss in the 11th hour . any changes are usually grand fathered too to those eligible .
the reality is you, need to have one in a couple live to 90 if delaying to equal taking ss earlier and spending down a balanced portfolio to delay ... so you are either betting on one of you living to at least 90 or you are betting on typical 6% real returns from a balanced portfolio just to break even . choose your poison .... i took mine at 65 for the record . i was going to delay but with us spending an extra 40k a year from our own money fronting ourselves the ss while delaying plus losing a lifetime of compounding on that money just made delaying not worth it .
my wife could not get a 4500 dollar a year adder to her benefit until i filed either .. i work one day a week and i had to wait until the year i would be fra so i could earn at least 45k and not give ss back under the special rules or i likely would have filed sooner ..
but for non investors or those living on just ss , delaying retirement can be the biggest silver bullet to fixing an under funded retirement .