This reminds me of a paper on primate stress level increases due to the amount of time they spend foraging (study was focused on deforestation but seems applicable here). It seems to suggest a biological ceiling for well being and reproductive success.

https://www.sciencedaily.com/releases/2013/01/130122102110.h...

True. That is also because digestion for them is wonky (IIRC).

However, they are a predator. Look at mice or other small creatures, and you realize their entire existence is the search for food.