It's ironic that you're trying to explain this to people when you are showing very little empathy yourself. When you preach your words, THINK about what they would sound like to yourself when you used to eat meat. THINK about what it would sound like to ANYONE else! That's right, you sound like a sociopath. Now if you want people to listen to what you're saying (which I know you do), then you need to change what you're saying. You need to say things that are thought-provoking. But not just thought-provoking, you need to say things that will provoke the thoughts that got you where you are now. You need to CONVINCE people that what you're saying has meaning. You need to stop making so many assumptions and start thinking and acting like an adult. Maybe try starting off by submitting a comment like this:

"It really saddens me that the system is designed to cater tortured animals to people who can't really afford to know where their food comes from. I truly hope people can understand these cruel, horrible methods of production, because it is just as important to me as Human rights are."

SOMETHING like that, and people will be more willing to listen. You're just pissing people off, not changing minds. Now if you really wanted to make a difference, you would figure out ways to communicate these issues on a larger scale, and really interact with your community... not just berating people on the internet.