My saving grace was my 401k plan and my IRA. SS should be chump change for you to retire. If you rely on SS, you will never be able to retire. Don't even think about it. If you think $150k is real money in an IRA, you won't make it without working longer. SS is just extra spending money in Retirement.
Just like many here have posted, SS is not to be counted on in another 10 years or so. If you get a raise in SS it will be paid for with fake money from China. It won't even keep up with inflation.
If you are in your 30's-40's, budget for saving more money for your own retirement in an IRA, Roth IRA, or your 401k. If you plan to retire earlier than 62, have a Roth IRA with some money in it. If you are 50yo , living paycheck to paycheck, plan on working till you drop or selling Grandma's farm. You can save more money than you think if you don't think you have to have a $50k truck every couple of years or a vacation every year. I did fairly well as a blue collar telephone repairman with some overtime. Also learn how to trade stocks with calls and puts to draw 10%+ returns on your self directed IRA. Someone else is NOT going to love you as much as you love you. Anyone that tells you they can build your money for 10% will just lose your money until you take it back from them.
Another angle is to learn about real estate and have a couple of pieces paid for by the time you retire. Drawing rent is another plus, but just being able to sell property and put it in your self directed IRA is a must. If push comes to shove I can sell my own home to bolster my IRA to last until we are 100 yo. Realistically, my wife and I don't expect to make it much past 85. Only one relative has lived past 85 in our families. You can't plan for everything, but you can get a comfortable plan to last a reasonable time. SS will be a minor factor in financial planning if your doing it right.
A lot depends, just as much as your savings, on how much you plan or are required to spend each month. My needs and wants are few.
See my #55.