i could do it, things would just be a little more inconvenient. i should know, i went a month or so without one when my old one got stolen. now if i didnt have my comp thats something id have a lot of difficulty with.
Well... most of the time it's good to have a mobile phone with you, and it's more comfortable too but I wouldn't die without one! (or maybe I would, if I get lost in the desert and can't get anybody to help me)