We’ve been eating animals a few million years longer than drinking their milk. (Lactose intolerance is far more common than generally thought.)
Take another look at your map there, because it backs me up.
Here’s another, lactose Tolerance (notice Tolerance with a T) https://en.wikipedia.org/wiki/Lactose_intolerance#/media/File:Lactose_tolerance_in_the_Old_World.svg It shows pretty much only Northern European heritage, iffy if you’re southern European, and pretty much everyone is out of luck.