"Samsung SCH-u740 Cellphone (3.6oz) *emergency only* – NIX – To me, it's a philosophical thing, I love liberating myself from the outside world. People camped for all of human history without cell phones, until the las decade or so."
I'm not so sure that I buy this argument. Just because "we always done it that way" is not a valid reason to continue to do something. Campers got along just fine without 30d silnylon for tens of thousands of years, for example, but no one is advocating using deerskins as a tarp here, right?
Please pardon the reductio ad absurdum.
(And I will, however, accept the "liberation" argument- that's a personal thing. YOU GO, MIKE!)
Cellphones are a great choice for safety equipment for those who want it, assuming that you are hiking where you can get a signal. If nothing else, most people already own one. A phone can send a much more detailed message than a PLB, or even a SPOT tracker, so that rescuers know exactly what to bring along. Also, you can rescind a call for help if you need to. And many are wikid light, nowadays. (Especially the cheapo plastic pre-paid ones.) A PLB is sort of an all-or-nothing deal, y'know.
Obviously, most of us are comfortable with managing risk for ourselves. That sort of comes with the ultralight thing. But imagine the grief of someone who leads their spouse or friend into the wilderness and they get hurt. Bad. So bad that the 6-hour hike out to fetch help for them makes a difference. VERY unlikely, I know, but so is having my daughter kidnapped into child sexual slavery, and THAT thought nonetheless gives me ulcers.
Lots of use carry a really light GPS like a Garmin Geko or perhaps a GPS watch as backup emergency navigation equipment. I don't think that a cell phone is any more ridiculous.
Thus, I understand where people are coming from when they take their cell phone along on a hike. If you want "liberation", just turn it off until you need it. :)
PERSONALLY, however, I'm with Mike. I'm a surgeon, so my cell phone is actually an instrument of torture to me, and I would love to discard it for a weekend. The cursed thing never stops ringing. Unfortunately, it is rare that I can leave it behind with a clear conscience.