meh I am in a similar boat - my mother always keeps telling me to have my mobil phone on me at all times - if its on me and I am out its off or ignored! I don't want people to phone me up to chat about the weather when I am in the middle of a shop or such.
As for facebook I have it - but I use it mostly as a self updating contact book - so its good for when I do end up dropping out of contact with people and then want to find them again - but I don't go in for all the rest and hardly ever visit.
As for phones I do hate answering them - especailly lan phones when its a salesman calling!!!!!!!