In fact, it's become at least a small part of my definition of success. I am not a concierge. I do not await phone calls with the longing of a teenager on Friday night. My peace and leisure cannot be disturbed at random. And most importantly, my interactions with the people in my present can not rudely be put on pause for just any reason.
I have never had a call in my life that could not wait a few minutes. If you have many of those, I'd suggest that someone (not necessarily you) needs to revisit some aspect of their infrastructure design.
Sadly I was finally lured into the mobile masses by the prospect of smartphone application development. Though I am at least able to rationalize it with the thought that it's not so much a phone as it is a tiny personal computer that I can distract myself with whenever I want.