There is a reason why people naturally gravitate towards warmer tropical climates. It's ideal for sustaining of all life. Have you forgotten there can be no life without the sun? Ketosis = darkness, stress, winter, opposite of the sun. You age terribly due to that fact(Jimmy Moore anyone?)
Ketosis symbolizes starvation; the human body is resilient and does not want to die so easily, so it gives you all these neat tricks in order to keep you alive a little longer. It's not meant to be anything other than that though, and no one has ever proved otherwise. Random trials and abstracts that show the benefits of ketones does not prove the benefits of ketosis and until something shows me that beyond a shadow of a doubt ketosis is superior for longevity, beauty, cognition, I'll keep eating like a "hummingbird".
Longing is the agony of the nearness of the distant