But I don't WANT to quit smoking

I can't believe I quit smoking. I didn't want to quit. I wanted to want to quit. I wished I wanted to quit. One day I just couldn't keep doing it any more. It's the weirdest thing: I can't bring myself to smoke even though I really really want to. Sometimes I get this strong urge to have a cigarette. STRONG. Know what I mean? Ever been addicted? That book (Easy Way to Stop Smoking) is spooky. I didn't even finish it. I knew there was something strange because I was only about a third of the way through it and I wasn't wanting to smoke very much. We took a trip to Portland and stayed in a hotel that didn't have any smoking rooms left and we had a non-smoking rental car. When I made the arrangements I was pissed -- I couldn't figure out how I was going to enjoy the trip. Once we got there (and I had read more of the book), it was no problem. It's just too weird. I don't understand it. I want to know what happened, how it works. How could I be a smoker one day, with no intention of quitting, and then wake up the next day and say "I'm not smoking ever again?" What is that?