I think we need a different kind of face-punch for those of us who just won't believe the math...or act in ways consistent with the math.
I have mostly been using Fidelitiy's retirement tools over the past few years, which say I'm on track to retire in 4 years, even in an underperforming market. It gets much closer if I dial back the time-frame, but it stills says we'd stand a decent chance of success retiring next year.
For fun I went back to cfiresim and plugged in the numbers, being very accurate with our assets (and not including the paid off house in the portfolio), overestimated spending and likely life-span, underestimated pension and SS...retiring next spring. The success rate is 100% without ever getting close to zero.
I may do it, but likely won't for another year or so...
Punch me (?!)