Several people that I've warned about Facebook say that they can't quit, usually because they either advertise there, or just because everyone uses it and they want to keep in touch
If you smoke enough cigarettes you will probably get #cancer. Quitting is hard, but it's most likely worth it.
Have you ever seen people with a hole in their neck?
That's an interesting way to think about it, I always saw it as distancing yourself from a dependency. It's much easier if you replace bad habits with constructive ones
I had trouble quitting cigarettes too, but kicked them pretty easily when I started dating a non-smoker. It's nearly impossible without a good reason though, I'm at ~4 years now
You can only quit an addiction if you have a good enough reason period. A good WHY? (reason to quit) will carry you through every single obstacle and hard time.