Eh there would have been a dinosaur dink eventually who would have screwed it all up for everyone.Overall we're a selfish, destructive species who like to indulge, even at the expense of others and have awful behavior noted all throughout history. Humans aren't going to just change. We're just a plague on this planet and our existence is such a strange futile phenomenon. Just imagine how much this planet must have thrived and will thrive without us. Dinosaurs were much cooler.
Don’t worry, the sharks, crocodiles, and tortoises will have another shot when we’re all gone.