Three factors make people retire, which are; 1. Age, 2. Health and 3. Financial satisfaction.

No one plans ills for himself, life happens, but if you are lucky enough to be favoured by 2, then you can override 1 and 2 depending on what you want for yourself. I also don't plan to quit making money till I take my last breath. The difference at that time is that I will be doing the smart work while people do the main work for me. And of course, smart investment will be on the top list.