The willingness to generalize about and castigate meat eaters is telling.

>pretty decent lives for the animals

There is a romanticized vision of nature which isn't entirely accurate. Consider animals in a state of nature. Most will die horrible deaths after suffering sickness or death. Humanely treated domestic animals live charmed lives in comparison. Their health is valued, protected by human incentives.

https://www.youtube.com/watch?v=zTVlifTAdlM