Here's my theory: Humans are PRIMATES, meaning APES...Gorillas with toothbrushes if you will. EVER seen an APE living in a COLD area? Nope, didn't think so. AND, they have FUR, for the love of God!!!
The ape, in what is obviously FAR more wisdom than his hairless cousin, lives in the TROPICS!
If they'd have thought of blenders, they'd all be mowing down Banana Daquiris all the livelong day.
Why did WE, the supposed SMART ones in the family, choose to live in areas of the world that got so damned COLD? We don't even have FUR! What in God's name were we THINKING?