fighting, greed, and all those other factors in our nature most certainly have helped us as a species as much as hindered us ..
Now there just isn't the room or the resource for it.
If we really believe that we are an adaptive, creative, reasoning, intelligent species good at problem solving...
then we should be able to adapt and change and thrive to the situation(s) we are now in and the many other situations we are racing toward...without going extinct (or driving harum scarum every other species to oblivion either...) from our own folly in the process...

My next post is ...sadly.... condolences....