+1 to the above. I left to become a supply teacher in schools and a lecturer at college. Love it, never going to be rich by it but I work three days a week and have 16 weeks a year off. Time is priceless and something you can't buy back.
Earn enough with the pension to do what I want; fly around 100 hours a year and have good hols. No debts, no mortgage, mrs thing has a good job too. We're both 57 and life couldn't be better.