not possible to grow veggies in some places around the planet.
Food is the (R)evolution. There is no other.

Grass attracts rain water. Water nurtures micro life in xoils and forms bacterial and mycelial networks that sustain plant life. Plant life meeds cycling carbon wich requires light concentrated grazing with subsequent many months rest before the next animal impact. This regenerates diversity of life in a few seasons. Rivers and streams flow clear anew even in harsh droughts. Check Water in Plain Sight by Judith Schwartz