But one thing troubles me. If we are happier after this, why don't humans practice it worldwide on themselves? Surely their own lives would benefit. Human overpopulation would fall, the natural world would flourish better with fewer humans. Men would get into fewer fights and women would not be exhausted or even killed by repeated child bearing. We need a worldwide campaign to neuter and spay humans!
They call us selfish but if you want to find a selfish species you only have to look at Homo so-called sapiens. They blame us for killing wildlife, but who has been slaughtering elephants, big cats, and ruining the habitat for wildlife. Not us.