Addiction to Reading?

I don't know if this is a good thing or bad thing but I started last week by reading Dan Brown's new Robert Langdon book The Lost Symbol (for those who still are scratching their heads, its a sequel to Angels and Demons and The Da Vinci Code) I finished the book in about three days, pretty much tuning out reality in the process. After that I started in on another book I had a while back about the Mafia and the history behind that. Soon I finished that and went onto a novelization about a comic book storyline that I have been trying to read for a while. After that I HAD to stop. I wasn't getting any work done and almost seemed like I was ignoring friends to a certain degree. Can reading be almost as addicitive as heroin (not that I'd know lol) or is it just me. Do you ever have the feeling like you want to read a book and just not stop no matter what? It felt like I could survive the end of the world if I just finished the book. Does anyone else have these feelings occasionally?

Notes - I hadn't read a book for pleasure in almost six months. Also The Lost Symbol was awesome and moves away from the cliches that I've seen in the three novels I've read by him. Finally, why can't school textbooks be this interesting; if they were, I might be the greatest student in America lol.