I would argue that your sterile Earth is unliveable for the same reason a 6x8 cell with no windows is unliveable. The basic conditions for living are not the sa

I would argue that your sterile Earth is unliveable for the same reason a 6x8 cell with no windows is unliveable. The basic conditions for living are not the same as the basic conditions for life. By that, I mean that food and air are necessary for life but can we really call that living if that is all we have? Our natural environment contains a rich diversity of species and life forms that have evolved over billions of years. If you think sterile environments are enough, how do you explain why people routinely travel to the outdoors and to the backcountry? I think it's foolhardy to ignore these facts when you consider whether climate change has a negative impact on us. And it's especially foolhardy to dismiss the effect nature has on humanity given the volumes of evidence to the contrary.