I think about this too. For those who don't know the reference, I recommend reading [1]. What happened is that Dr. John Calhoun made a series of increasingly l

I think about this too. For those who don't know the reference, I recommend reading [1]. What happened is that Dr. John Calhoun made a series of increasingly large "utopias" for mice and rats. Mice were fed, kept warm, and placed in a controlled area where there were no predators. After a bit, the mice begin to thrive and expand. But after a while things start to go astray in ways that are unexpected and a bit strange. And ultimately the population collapses and completely dies out --- even in utopia. [1]: https://www.atlasobscura.com/articles/the-doomed-mouse-utopia-that-inspired-the-rats-of-nimh https://www.atlasobscura.com/articles/the-doomed-mouse-utopi...