I've run a wide variety of numbers through Firecalc, and basically, it doesn't matter whether I start taking SS at 62, 70, or anywhere in between, as far as success rates go. FWIW, right now, according to the SS calculator, I should get $19968 per year if I take it at 62, $29208 if I take it at my FRA of 67, or $36672 if I take it at 70.
While that sounds like a big jump, getting almost $17K per year more if I hold out until 70, once you take into account I have to make larger withdrawals from my investments earlier on to get to that big jump, it pretty much all comes out in the wash.
However, once I actually GET to that point, I could sort of seeing me do the OMY thing, depending on where the finances happen to be then, just for that extra insurance. Not that SS is really all that "guaranteed" anymore. At least, not the promised benefit. In my case though, I will hopefully be retired long before the age of 62 (hoping for 51-52, depending on how things play out), so for me it would just be a matter of delaying filing another year, rather than w*rking for it.