When I'm at home or out running or at the gym, I use a case to protect my iPhone. It's usually during these situations that I've dropped my iphone many times. Outside of that I do not use any case at all (at the office, social events, etc.) I do this with my 4S right now and it worked well. My 4S is still in mint condition and no scratches at all after 2 years. I intend to do the same with my Gold 5S when it arrives. I'm currently using an Incipio case but I wonder if there are better options out there specially for the 5S. The case needs to be easy to take the iphone in and out on a DAILY basis.