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I am not “selling” anything. Grass fed beef and grain fed beef are completely different in appearance, taste and nutrition profile. People I know who have never tried grass fed are amazed at the flavor when they do try it. Many of the ranchers who do grass fed also avoid hormones and antibiotics. If one prefers “medical meat”, eat conventional :-)

I’ve had both and in fact I worked for an upscale grocery chain at the HQ level for a long time (in 2008-2009 I could buy grass fed ribeyes for $3.2/lb with employee discount basically two straight summers). I prefer grain fed both for taste, marbling, and price. To get grass fed anywhere near as tender as good marbled grain fed, you have to marinate it overnight. But hey, my old industry loves people like you that pay 2x for organic, “natural” and “ABHF” - probably paid my salary for a while.

I originally reviewed numerous medline veterinary studies. This one from nature does a pretty good job of identifying the changes in feedlot cattle.

Fatty acid analysis of wild ruminant tissues: evolutionary implications for reducing diet-related chronic disease

The practice of feeding cattle grain during the feedlot fattening process is directly responsible for the differences in fatty acid composition between grain and pasture-fed cattle. Grain feeding increases the absolute saturated and monounsaturated fat content of beef while it concurrently lowers the absolute n-3 PUFA content (Table 7). Corn and sorghum are frequently the predominant cereal grains fed to cattle in the feedlots, hence the inherently high ratio of n-6/n-3 FA (70.7 and 16.2 respectively) of these grains (Cordain, 1999), along with the dilution of the phospholipid fraction by increases in triacylglycerols, is responsible for the higher n-6/n-3 FA ratio in grain-fed beef (Table 5).

Comparison of pasture-fed and grain-fed cattle (Figure 4) shows that the total fat content in the muscle tissues of pasture-fed steers are similar to or slightly higher than values in wild ruminants. However, the absolute PUFA and n-3 PUFA content of pasture-fed beef remains lower when contrasted to elk, deer or antelope. Despite these differences, the overall lipid characteristics of pasture-fed cattle are closer to values found in wild ruminants, and from a health perspective, the meat from these animals would probably be superior to meat from grain-fed cattle.