I am a classic unschooling adult. I had a woeful education long ago, growing up, so long ago dinosaurs still roamed the earth (i.e. memorize things, get the good grades and pats on the back, retain nothing) and now I realize how VERY LITTLE I know about history, and (contrary to the way it was presented in school) I find it fascinating! So I soak up as much as I can now, because I want and need to. Which is just the way we always say that our unschooling kids do it. It's true!
My problem is finding the time. On Mothers Day I said "All I want for a gift is to have the whole day off so I can read and draw." So that's what I did. Read history and made art. But day to day, it's nearly impossible to find the amount of time I need, between being here with my son & meeting all his needs, and then my two jobs, and the household stuff. I do find that frustrating.