One thing not yet discussed in this thread is the SS strategy known as "file and suspend." Lots of folks (even some retirement planners) are not aware of it, despite it being explained on the SS website and in literature.
Maximize Benefits with File and Suspend | Social Security Choices If your spouse is just a few years behind you, it may be a real incentive to wait until you're 66 (full retirement age, for SS purposes), then file for benefits but simultaneously ask that they be suspended until a future date. Suspending them until age 70-1/2, when they must be taken, yields the most benefit.
This strategy isn't for someone who really
needs as much immediate cash flow from SS as possible. If you really need it, then of course it makes sense to take it. But that does mean that the monthly payments will be at a reduced rate the earlier you take it, significantly so if taken at 62. Another member observed that the 8 percent simple interest annual growth of payments resulting from waiting is low compared with an average 10-12 annual return in the stock market historically (indeed,
much higher in the most recent years). That's true, but as someone else mentioned, the SS yield is indexed to inflation, and is (IMO) a much safer bet than the stock market, although I'm very big on that, too. It also assumes that the reduced SS early payments are actually used to purchase stock (I'll bet that doesn't happen often!), or that taking them avoids having to cash out of well-performing securities that are already held and that are the only other available source of funds.