The removal of flies from your body can be seen as a sign of vitality, do you ever think that eventually if you grow old, there might be a point where you no longer have the means to drive away flies that consistently land on your body. You might be sick, bedridden and old, unable to do perform this now very simple action.
Or do you take solace in the fact that you are able to do so now? And whatever the future holds is not yet in existence?