Thankyou! I feel that in the vast majority of cases no killing is necessary and that really, the only situations where killings would become reality in in a balanced world are where compassion breaks down again and we miss important information about the best course of action. Unfortunately, to be so balanced as to always be in tune with the best course of action is a rare occurrence on Earth at present, so there may be cases where killing does end more suffering than it causes, yes. :/