The real people of this world

Today I realized that I don't understand humans again. How can a person be such cruel between their fellows, their world, their enviroment, and with himself?
I reached the conclusion that humanity isn't fair with nature, and there, I want to share my idea about other beings who are.
I consider animals like perfect beings. They don't disturbe anyone, they live in perfect balance and have a food chain in base of natural equilibrium, which continues renovating everyday.
Fishes, birds, worms and reptiles. Penguins, sheeps, turtles and mouses. Lions, cows, bats and horses. They all live in harmony when no one destroys their habitat. Animals like dogs or cats, are the most popular human's friends because they are often part of our family. We love their simpleness, their cuteness, their innocence. We enjoy their company, affect and pureness. Playing with them comfort our soul and bring us a peaceful rest, forgetting all material concerns.

There's something I have to add. It's sad to know some guys enjoy making them bad things without caring these creatures are more perfect than we are. Animals don't deserve any punish of any kind.
An animal life can value more than a human life, because they live in perfect harmony without harming anyone. They offer love to us, so, at least, we should do the same for them and respect their existence.
I won't judge anyone who has done such evil acts. They deserve to live with that torment until some day, life takes its revenge.