I can’t add anything to this, so just go read the whole darned thing: Misguided Nostalgia for Our Paleo Past
Here’s a pull-quote, if that’s what floats your boat…
To think of ourselves as misfits in our own time and of our own making flatly contradicts what we now understand about the way evolution worksâ€”namely, that rate matters. That evolution can be fast, slow, or in-between, and understanding what makes the difference is far more enlightening, and exciting, than holding our flabby modern selves up against a visionâ€”accurate or notâ€”of our well-muscled and harmoniously adapted ancestors.
Seriously interesting stuff, I kid you not.