So you're advocating the extinction of humanity. Are you sure that's the position you want to take?
If so, what are you going to do about it? In a "best" case terrorism scenario you might be able to kill a couple of thousand people but even that many would be useless in terms of killing all humans. If you have the right knowledge, skills and equipment it might be possible for you to engineer a bioweapon that might possibly mostly do the job, maybe. It might be possible to kill enough people to bring down civilisation worldwide, which would at least suppress humans for at least a few centuries. But do you really want to do that even if you could? Are you that convinced that all humans must die?
EDIT: And yes, we are obviously mammals. You're making up nonsense to pretend that your views have a basis that they do not have. People who advocate genocide always decree their target to be essentially and fundamentally different and you're no exception in that.
Other animals also change their environment to suit themselves as much as they can, e.g. beavers build dams. The only fundamental difference is that humans are far more capable of doing so. What you call instinct is actually power - other animals lack the power to make larger changes. Humans also have something more powerful than instinct - understanding. We can understand how things work and how to make them work better and how to build things to do things to a far greater extent than any other animals and that's where the route to sustainability lies. The strength of humans is intelligence and ingenuity, so that's what we should be playing to.