The brains of dinosaurs sustained them for over 150 million years. In fact, since birds are actually theropod dinosaurs in all respects, we can bolt on another 66 million years to that. Therefore, "nothing much" doesn't exactly cut it. And dinosaurs are the innocents of the planet, as in those hundreds of million years they haven't threatened the earth via irresponsible actions. We've managed that in less than three hundred years. And it would be a great idea to refrain from referring to human "breeds."

The animal kingdom includes vertebrates and invertebrates, not just cuddly mammals or cute dickiebirds. You might need to kill a cockroach that's invading your kitchen, or a squirrel invading your roof, or a house fly threatening to contaminate your plate of ham. But if you get a chance you should first contemplate the beauty of the synergy of form and function in those beasts. And the beauty of the diversity of life on earth that got to be there without the need for a magic being. All it needed was four billion years of evolution, a time scale almost too terrifying to contemplate. It's all good, but if that cockroach is threatening your patch it still has to die, regardless of that four billion years that made it what it was.