At the risk of coming across preachy, there are a couple of sources of information that have helped me to conform to my much earlier decisions. One is the documentary film, "Earthings" - which I freely admit, I watched through my fingers. The other is a book, "Dominion".
And this,
"For the animal shall not be measured by man: In a world older than ours, they moved - finished and complete - with senses we have lost, or never attained."
[Unsure of source, but came from reddit many years ago....]
Even meat-eaters can demonstrate sympathy, compassion and understanding towards animals, who have their own internal lives that we have somehow claimed the right to obliterate.