How would you reply to someone who argues that we should not worry about the effects that human activities have on natural systems because natural succession will heal the wounds of human activities and restore the balance of nature?

Such an argument is not that difficult to form but we have to see who we are talking to about the issue of human intervention in the natural order. I mean there are people who would not change their believes about climate change because they might be involved in a business that earns profits from harming the environment. To a sane person, I would simply say that a human body has the capability to heel a wound by itself. But, if you keep on scratching the wound again and again, would it heel? I am sure the answer would be no. the same is the case with the nature. It can heel itself but if we stop to wound it again and again.