Quite right. Most of us also have lots of stuff that hasn't been done...a long "to-do" list that is never completed, so the idea that we should waste some of our energy on exercise is just cultish thinking...the cult of "exercise is good for you". Also, denialists and non-understanders need to grasp the concept of our "energy tanks". We are not like batteries that slowly weaken. We are like gas tanks that, once emptied, have nothing left.