> And yet it's true. 2/3rds of pasture is not suitable for agriculture and would be worthless without ruminants. So it's worthless with ruminants. So what? Why

> And yet it's true. 2/3rds of pasture is not suitable for agriculture and would be worthless without ruminants. So it's worthless with ruminants. So what? Why not just leave it alone/fallow? Also, how much water does it take to grow those ruminants and also the animals they feed?