What I mean is, I met an embodiment of the person for whom my books are written.
Oh, I've followed the advice of other authors who say to make up a person of a certain demographic and set of opinions, the better to target a marketing message at. That never worked very well for me as a concept.
My reader was excited to spend time with an author, in depth, discussing a book not yet read. We ranged all over the conceptual landscape discovering common opinions about how a plot should work, how worlds should be built, how characters should be, what makes a hero. We were someplace where we had the time to do that.
The whole time, I was at least as excited to meet the sort of person with whom my kind of story connects, to feel our mutual enthusiasm.
THAT'S why I'm writing, not just because I can.