Theyre fucking animals dude. Humans, and other animals, have been killing animals for literally hundreds of thousands of years! Who gives a fuck if we kill a million cows a year, its part of life that animals kill other animals to survive. Also the fact that you are even slightly comparing killing a cow and a person committing suicide makes me want to punch you in the face.
One human life is honestly more important than 10,000 cows (or more even), and I can't even begin to understand how you could ever feel worse for the poor dead cows than actual people who have committed suicide. You need to get your priorities straight.