Why would a cell want to commit suicide? Well, one of two reasons as it turns out. Apatosis is a normal process during embryological development and it's also normal process during the development of our immune system. So what exactly do we mean? Well, when the embryo is developing inside the uterus of the mother to actually form the fingers on the hand and the toes on the feet, apertosis must take place naturally between the regions on the fingers to actually form the fingers. So the reason we go from this to this is because of apertosis that takes place during normal embryological development.