Why Must The World Be So Cruel?

About 1,000 dolphins are now dying annually in Taiji, Japan. That is still too many, but think about the millions of sharks that are still being killed each year. The death toll for them hasn't decreased at all, and it's because people don't care. Also, there are thousands of dogs each and every year being abused, killed, and  spending their whole lives in shelters (I praise everyone who rescues dogs and doesn't buy!). The world is filled with too much cruelty, and I don't understand it. Why do some people have to be so inhumane, so heartless? Why can't everyone just leave the poor animals alone and let them live their lives? They have just as much of a right to live here as us humans do. To be honest, I think when it comes to most situations, the "humans" shouldn't even be classified as humans. But then again, I guess that's what makes us humans. The power and ability to rule everything, both bigger and smaller than us. If we can effortlessly slaughter the largest animal on the planet (the blue whale, of course) nearly to extinction, then we can do anything. But without weapons, we are nothing. If we weren't intelligent enough to create weapons as we do, we would have died off long ago. We're smart, but that's about our only advantage. We are tiny and insignificant without weapons. Sometimes, I feel ashamed to be human.