I completely agree with your first paragraph.
With regard to the second, I used to think that way, but I no longer think it’s the whole story, for some of the reasons revealed in 73 Cows.
The documentary highlights some of the contradictions and paradoxes around the idea of humane farming. It's undeniable that they were conscientious farmers, but that just made it all the more difficult for them to send their animals to slaughter. Why? For one, if an individual is given a good life then it makes it all the more tragic for it to be snatched away from them. And further, if you truly care about another, you look after them, form a relationship with them, understand their unique characteristics and so forth, then there's something downright sinister about betraying them by sticking them on a truck to what is, in all likelihood - as they say on the documentary - ‘a terrifying and painful death’. To see the force of this point, imagine if somebody sent their dog to a slaughterhouse to be turned into a fur coat or mincemeat. The fact that the dog had a good life before slaughter does not address the ethical question about whether it is acceptable to exploit and betray vulnerable, dependent individuals in this way.
This is the dilemma of animal agriculture: it either involves giving animals tragic lives or tragically depriving animals of their lives. Jay and Katja realised this, and moved away from it as farmers. I think we should do the same as consumers. And that’s a lot less of a hard, life-changing decision for us than it must have been for them.