Fighting to survive as an individual I understand. Every creature does that. But this...it's as though all the rats gang up to try and destroy all the cats, or vice-versa. That's just madness, to my mind.
Can't understand the superiority idea, either. Everything, everyone is important. How could someone honestly believe that just because they think someone else is inferior, that gives them the right to destroy them? I don't believe anyone or anything is inferior or superior to anyone or anything else, but even if I did, why not just ignore them instead? That seems much easier. And if they were inferior, surely they wouldn't be worth my notice, right?