I agree with the others. I have never been a runner, but I needed something to release anger. It is hard at the start but once your in the swing of it, its amazing how quickly your body improves. I started doing a bootcamp soon after I started running and that definitely helped with over-all fitness and therefore made running easier.
I thing I love the most about running is, it is the only thing that is 100% for me. No one comes with me, no one interrupts me, all for me.