
My library has a great comic collection but some don't have any. It all depends on the local community and what they want. Like in the county i live in, there is only one library with a decent comic collection and it's the one right next to a middle school. There's another one that has a great music collection. There's no reason for it. I guess the director is into music.
I used to go to a lot of libraries for different things, one for music, another for comics andother for lecture series. It's a lot of fun to explore them all.