As I write my 30-something characters this week, I’ve been thinking about how much of the world I am not a part of any more—specifically, pop culture. Liz and I talk frequently about how we are aging out of many things. She wonders if she’s aging out of romance novels–reading and writing them. I sometimes wonder if I’m aging out of being able to keep my plate as full as I do with editing gigs and writing deadlines and book promotion because stuff falls off sometimes, and more often than I like, it’s fun stuff like time with family and friends. Every now and again, I watch younger writers who…