We've all heard that phrase that without our health we have nothing. 
We all work hard, we try to pay off our bills, we put off sleeping and put our body through hard situations with the goal of "getting ahead." 
Dave Ramsey says that if we spend our money like nobody else, someday we will live like nobody else. Well this goes the same for our food. If we eat the way nobody else does (skipping fast food, soda, etc) we will live like nobody else as well. 
We need to take time to think about the long term. It makes no sense to kill ourselves to live.