The Washington Post has a rather depressing article on The New Reality of Old Age in America, which includes the following chart about Social Security:
For 1/3rd of recipients age 65+, Social Security represents 90% or more of all their income. For 61% of recipients age 65+, Social Security represents at least half of all their income. In other words, Social Security is the cornerstone of retirement for the majority of Americans. Not a company pension. Not IRAs or 401k withdrawals.
Many articles like to explain how waiting until age 70 (the latest possible) to start withdrawals is mathematically the best move, but in reality the most common withdrawal age is 62 (the earliest possible). You only get about 75% of the monthly benefit at age 62 as compared to waiting until “full” retirement age (66 for current new retirees), but you get the money sooner.
Young people like to say things like “I don’t plan on Social Security being around when I retire”. (I probably said something like this too when I was in my 20s.) I have since talked to people whose sole income is Social Security. Nowadays, I don’t see how it could go away.