Because they are living beings, sure to you they may just be animals but they still have a soul, and live. You cant say they are cruel because they don't kill for sport like humans they do it to live. Can't call them cowards because they fight to protect them self, there young, and there mates. Sure they are dangerous but we can blame humans for that. They live just like us and with out them the balance in this world would be messed up. If anything they are beautiful majestic creatures.