transitioning?

Margaret comments on my post about transitioning to adult books: "For me, it wasn't a question of transitioning FROM one TO the other, but of expanding my reading to include "older age" books without giving up the "younger" categories." A good point: that was very true for me as well, and if the term "transitioning" implies giving up something, then clearly we diehard children's book readers need a better word. Suggestions?

I have more comments on the comments, later.