I have to admit, though, I am worried about DS following in my footsteps and becomming overly dependant on extensive series. I didn't really get into reading one-off fiction until I was 14, and really, that was NOT ok. I was genuinely scared of unfamilliar characters/settings. DS seems to be showing some similar tendencies.
Is there really anything wrong with that? I still to this day love series books and have a hard time switching to something else when I come to the end of a series but that has never stopped me from reading extensively.

Sure, I'll pick up stand-alone books every now and then but I always feel a let down afterwards and keep wondering...what next? Then again, I'm someone who has a hard time even switching genres (for instance, there was a time when I was JUST reading kids books, then fantasy books, then comedies, then...). I would've been pretty annoyed if someone told me in one of my reading streaks that I had to switch things up a bit. I eventually did, but on my own time and once I felt done with that genre.
Maybe your soon has some sort of need that is fulfilled by reading certain types of books at that moment? DD tends to focus on certain type of books depending on the circumstances. For instance, the Llama llama books were really popular after we'd night-weaned her and also when she was dealing with separation anxiety. At times when DH is traveling and she misses him she'll asks for books in his native language. Now she's really into Curious George (and she happens to be going through a very silly/exploratory phase), go figure!
