Why did the first farmers settle down in one place to live?

For most of human history, people didn't have a hometown. They walked. A lot. Following animals, picking berries, sleeping wherever the night caught them. Then, around twelve thousand years ago, something strange happened — people stopped walking and started staying. Why would anyone trade the whole wide world for one muddy patch of ground?
The trick that changed everything was a discovery hiding in plain sight. Wild grasses — the ancestors of wheat and barley — dropped seeds onto the ground. And if you buried a seed, weeks later a whole plant of seeds grew back. You could grow your dinner. But here's the catch: a seed you plant won't be ready for months. You have to wait. And to wait, you have to stay.
