This essay focuses on the practical and aesthetic considerations of "buying grass" for a home garden. Animal Welfare - Michael Pollan

There is reason to believe that it is. The diet of the animals we eat has a bearing on the nutritional quality, and healthfulness, michaelpollan.com

: Acknowledge that grass-fed beef is often more expensive and requires more land than intensive grain operations.

Since your request is broad, here are two essay outlines based on the most common interpretations of "buy grass": choosing for health and environment, or the practical journey of buying turf/seed for a home lawn. Option 1: The Case for Grass-Fed Beef