The reason you are referring to isn’t different to the reason I’m referring to. If we look at it now as highly developed animals you could think that they differ, but the process of evolution proves their equality. We exist because the generations of our ancestors had some advantage to the other iterations and species.

We are better than many of them, that’s why we are here. We want to countinue being better and existing, that’s why we want to reproduce and survive.

I don’t have anything more to say.