Cruelty. It is wrong for us to go into another creatures habitat and act vengefully when we are attacked. The animals have a right to existence just like we do and as Moby Dick shows you cant take vengeance on an animal
Safety. Human safety is priority. Our first and foremost priority should always be towards the protection of human life. While the environment and wildlife are important as well if they need to be tampered with to protect people so be it.