> not every cow is only fed with grass, and what about that grass, has it been treated, etc...

the (low) possibility of mad cow always lurks in my mind when discussing things like this. I have a deep fear of prions.

The much more common scenario is the use of growth hormones in cows - to the point that pro athletes traveling/competing in Central and South America are instructed to avoid beef altogether as they later test positive in their drug tests for anabolic steroids.

I personally opt for meat over vegetarian options when given the choice to make sure I get sufficient protein (I do track and I struggle to get enough when eating vegetarian) but I still would vastly prefer more meat alternatives. I'm always very impressed by the Beyond options and I'm glad it's very slowly becoming more mainstream. I remember the first time I'd had an Impossible Burger was in San francisco about 10 years ago - a group of friends and I were talking about this "crazy meatless burger that still feels/tastes like meat" and we searched out a restaurant that offered it. The fact that national fast food chains are offering it now is indicative of the progress being made in society and normalizing the meatless alternatives.