Why do so many people have such a hard time focusing?

Everyday we are surrounded by things going at a fast pace and it really doesn’t take all that long to get adapted to that. At home we watch TV, play games on our high speed internet, and text our friends, then we go to school. The day goes by so slow and we can’t focus. Why is that? What makes it so that we have such a hard time focusing? Like I said earlier, it’s from all of the fast pace things that we deal with at home. It really gets to us, and all of a sudden if we can’t have it fast then we don’t want it at all. So at school when we are confined to the space of a small desk with a pencil and paper, we go crazy! So if we can get the world to not move at such a fast pace then it would be so much easier to focus in class.