Evidence (See below) shows that foragers used to be healthier than farmers in pre-history. Also, foragers worked between 4-6h to have all of their needs while farmers used to work for longer periods. So, what was the reason for humans to grow around farms instead of foraging?
What is the evidence-based argument in favor of that evolution?
Studies of foraging groups have also shown that they had more free time because hunting and gathering did not take up the whole day. Most of the community's resources could be gathered in about 4-6 hours of the day. In turn, foragers had more time to sit by the fire and share stories of the day than those who would later become farmers. Twenty-first-century humans work on average between 8-9 hours per day. Of course, I'm sure most of us would love to be able to work for 4-6 hours and enjoy the company of our families and friends for the rest of the day. A forager's diet was also probably healthier than that of a farmer. Anthropological studies show that modern-day foragers eat a more varied diet and do more exercise compared to modern-day non-foragers. A healthy diet and more free time are certainly positive aspects of a foraging lifestyle. However, this is not meant to suggest that life as a forager did not have its difficulties. For example, foragers had much shorter life expectancies. The average forager lived between 21 and 37 years. In comparison, the average person today lives 66 years. But these numbers fluctuate. For example, life expectancy in Japan is 82 years while in Zambia it's 39 years (Gurven and Kaplan 2017). One of the main reasons for this extended life expectancy is due to the advancement of medicine that occurred as human history progressed. There's also evidence of violence in foraging communities. In addition, some members of foraging groups were left behind if they were too old or too ill to keep up with the nomadic lifestyle. Less work hours meant that foragers also had more time to meet up with other communities in their area. They could create small networks. They shared food, tools, weapons, and ideas. These interactions led foraging groups to establish early trade networks between small communities of people. Foraging communities also may have met up for spiritual or religious purposes. As foragers shared ideas through language networks, they may have also shared beliefs about spiritual matters, including shared rituals and practices. Archaeologists think that this may have been one of the purposes of later Neolithic sites like Gobekli Tepe in Turkey and Stonehenge in England. KhanAcademy.org