In my experience the subject is normally brought up by meat-eaters who want to try and convince themselves that they are doing the right thing. Just look at the OP for example arguing that plants could possibly also have emotions and feelings therefore it's no better than eating an animal who is clearly able to suffer.
I have found the same thing with people trying to convince me that organic food is a con and that I am stupid for not following the exact same diet that they do. I never try to convince anyone else to eat organic food but if people find out about it then some can become really defensive about it.
I have found the same thing with people trying to convince me that organic food is a con and that I am stupid for not following the exact same diet that they do. I never try to convince anyone else to eat organic food but if people find out about it then some can become really defensive about it.