I'm doing it right now. Nine months into a sabbatical during which I've been working on music and enjoying the fact that my phone isn't going to wake me up in the middle of the night because the database is broken. I don't expect to go back to work (I don't need the money, but it's possible I might miss the social aspects of having a normal day job), but I'm not particularly concerned should I change my mind. My primary skillset is specialized enough that there aren't that many people who do what I do.