It's clear that everyone has different circumstances and/or concerns that factors into when they decide to take SS.
I can remember thinking seriously about it in my mid 40's that I would take it at 62. And when I turned 62, I did take it, but the reasons I took it had completely changed. Funny, as I got older, I began to see some things differently. For the DW and I, it was never a concern of having enough money no matter when we were to take it or how long we might live. Now, a few years into it, I'm 100% happy with my decision.
It's pretty much a done deal now but who knows, maybe in another 20 years I may see it differently again.