I think people abuse 動物 for the same reason they abuse people: we all want to feel powerful. When people hurt little animals, they may feel stronger unfortunatley. But in reality, they are the weakest cowards of all!
The reason is simple: Humans think they are superior than anything on this world. They think that they can have anything at their feet, but what they don't realize is that we are 動物 too, so I would like those idiots to think about their kids または girlfriend/boyfriend if they would like them to be treated the same way they are treating the animals, または even what if people treated them as the real 動物 they are?
I think that people who abuse 動物 are not もっと見る intelligent than what they claim to be. But people don't see it, well at least my conscience is at peace.
I think people harm 動物 because for one they're jerks and secondly, they hurt 動物 to make themselves feel better. They hurt 動物 because they can't defend themselves, but it is vary wrong and should be stopped
Some people abuse 動物 as 'practice' for abusing humans later! The animal is entirely at your mercy. How あなた treat it is the measure of your character. And people with murder in their hearts 表示する precisely that when they abuse an animal. There's a discussion of this at link