I'm the type people might think is ambitious, I own a business with a high valuation, I've worked hard for a long time, I'm very skilled in my field. But I only work hard for the reward. Once I cash out and have FU money, I am done working forever. Life is so short, I just want to focus on family, health and pleasure. I understand that most other ambitious people aren't like that but personally I don't get it.
I doubt you're atypical. Based on the smattering of people I know who were able and wanted to retire in, say, their forties to some point on the FIRE spectrum, they pretty much were retired. Oh, they might do the occasional advising or angel investing, might teach a class somewhere on the side, but were mostly retired. (That said, I also know even not so young "retirees" who pop up here there and everywhere doing various consulting and so forth.