raymw:
How do you know they are doing just fine?
Well they've certainly lasted. And when we finally snuff out the last of what we've got and go the way of the Dodo, they'll be the only ones with the skills left to survive in the world after.
The human race has evolved over centuries
Lol. The human race has evolved over millennia. The modern way of life is barely a blip in that time-scale.