Imagine you are in a park enjoying a great summer day. Everything is perfect but you spot a small crippled bird. This bird is struggling to fly when it does manage to get off the ground it runs into a bush as it is blind too.
You are not a cruel person. You like animals and don't want to hurt one but seeing this poor, tormented creature you decide the best thing to do would be to wipe it out with one swift stomp to the head. You, nobly, go to end its suffering, aim a kick but you miss. Somehow it dodged. You try again and again and again...somehow the blind crippled bird manages to avoid each swoop and prolong its bizarre existence. Suddenly you notice you are not the only one. There is a whole group of people trying to stomp the bird to death and missing with each attempt. Eventually you get frustrated, assume it will starve, and leave it to end itself.
You come back a week later and somehow the bird is still there, flapping a broken wing and running straight into things.