I used to be highly addicted to cell phones in the '90's.
In 2005 I spent a year working overseas. When I got back I just never got around to buying a new phone. I have to say, it has been extremely liberating.
So much so that we went one further - we don't answer our land-line either unless it's someone we know and we don't check voice mail.
I also don't wear a watch and go to sleep/get up whenever my body tells me to rather than stick to a strict schedule.
You can reach me via email, MSN, GoogleTalk, Skype or hey, knock on my door and say hello!