I think every one of us are a bit of a slave to their phone... As long as it's not harmful I guess it's fine and of course we cannot forget the people around us too. One of the worst things lately is that people cannot seem to get their eyes of their phone even on the road - I have witnessed it myself how one girl was so occupied with her phone that she didn't even notice the queue of cars behind her as she was going so slow until the moment when her car engine stopped...