At my work at a Fortune 50 company, there was a common story that 50% of management that retired, died within 5 years. Whether true or not, it was a great parable that motivated my desire to retire early.
Perhaps to make the point sink in, late in my career, the very early passing of two of my key employees (and friends) within 6 months; and then a young-ish friend - and my Dad and MIL - within the next year, very much influenced my decision to retire shortly thereafter. (Along with being a financial position to do so.) DW was NOT happy about my unilateral decision - I don't blame her - but I was cooked and couldn't go on. I'm so grateful that I did, because after retiring very early at 53, I had a huge heart attack at 55 that 100% would have killed me if I were in the office [on a Tuesday morning]. I dodged a bullet and just barely avoided the fate of one-half of my management peers.
Only you can decide when you've had enough of the rat race. Retirement has been so much better than I anticipated; and we've been fortunate to retire at a good time for our investments. Both my DW and I now know it was the 100% right decision for us, and we are so appreciative.
While there may be no guarantees retirement will work out like you expect; there are also no guarantees you'll even be here to enjoy it. That's just an inescapable fact. The years you put off retirement are like boats that are burned to continue the expedition. There's no going back. Early Retirement is a huge adjustment, but it represents the ability to lead the rest of your life, your way. It doesn't get better than that.