By the looks of the answers on here and many people I know, I consider myself very lucky to have been able to retire before my 53rd birthday, some 6 years ago. I would certainly be richer if I had continued working, but money isn't everything - so long as you have something approaching enough.
Should you be so fortunate as myself, do remember that you really do need a reason to get up in the morning, or those minor ailments will progress and be joined with new ones and push you towards an early bath! As for me, my retirement was seen as a green light for my children to start their families. I now have 5 (soon to be 6) grandchildren and offer my time (within reason) to allow my children time to pursue their careers. I also part-time look after a small pheasant shoot.
As you can imagine, both these post-retirement commitments bring some stress and worry, but to be honest, it's things I want to do, on my own terms and I don't regret a minute of it. Beans on toast for tea though....