Goats regenerate your land by aerating, mulching, fertilizing, and irrigating. This in turn helps reclaim the land and return it to a healthy, natural ecosystem.
Goats don't compete with cattle for grass. Goats are browsers, while cattle and sheep are grazers. This means they like to eat what is up high rather than what is down on the ground.
Goats eliminate the need for pesticides, which are more expensive, harmful, and don't eradicate weeds effectively. If they did, there wouldn't be a weed on the planet by now.
Everything a goat eats is recycled as a fertilizer and laid back down on the grasses. As the goats graze, they trample in the fertilizer and regenerate your land.