I, personally, would have many difficulties without a mobile phone Yes, I could live without one, but I think as a society we get used to certain things and therefore have higher expectations placed on us. When one has a moblie phone, that person is expected to be easily reached. My family knows that they can send a text or call me if they need something. Without a cell phone, my contact with others would decrease significantly and would probably frustrate the people around me. I also feel more safe with my phone around, especially when I'm traveling long distances. I need to know that if I break down or run out of gas, I can contact someone for help without taking a risking walk along the highway to a gas station.
I also use my phone frequently for GPS. Before this, I would have had to look up or call for directions ahead of time. While this would be possible, it would be unnecessarily inconvenient.