Perhaps the emphasis was not correctly expressed in my post.
In fact, I see all this differentiations as a kind of blurry borders, and I'm not denying cows would feel some sort of pain, but what I'm going after with my post is the idea Mets' post directly or indirectly conveys, the transference of our type of suffering to the cow.
More than an evolutionary issue, we're talking about a cultural issue. If you guys love your evolution theory so much, you should know the key here are the mental tools and not the available neurons or whatever. ANd I say "you" meaning both of you because I've now included you with MEts here, and you're going down.
Go check your links and stuff, I don't need any, I know it all already.
Example: Mets mom loses Mets just after birth, it was taken away by the men in black.
Mets mom is happy, she had never seen such an horrible baby in her life. She's sad, her whole hormonal system is waiting for Mets to suck on her tits for her to feel good and reinforce the love towards Mets, evolution is so good at this. But she's sad, and she's had this software in her head that she has to be sad also, the whole software in her head is just to big to simply say, hey, whatever man, I'll go have a milkshake now. Nope, she has to feel sad, because there's an image of her in her head, and it's consistent with she being a good person, because daddy once showed her when she was 4 years old, that she admired being a good person and she didn't have then mental tools to think, maybe I'll be a bad person, bad persons seem to have more fun. Nope, in the emotional stage of learning, she just took that sort of energy, that emotional state, and sort of decided she was going to be a good person. Anyway, Mets mom also watched many movies, in which she reinforced the idea that she's now to feel bad. Also, the conspiracy theories, oh noes the government!! the government did this to her, and we're now with the idea, already in her whole software, that the world is unfair, that we're here to suffer (worse if she's catholic) and that our only choice is just simply try to enjoy little things and endure the sufferings.
So you tell me cows have all this in her heads too? Bullshit.
We cannot transfer our human judgements to other animals. We can't even transfer our judgements to people from another culture. We can normally transfer our judgements to someone in our same city, but even in the same city, you will find people that thinks differently.
I'm not denying their suffering, and I'm not sure as to how much it last or how much it affects them. What I'm sure it's that it's not even close to the amount of psychological pain we put ourselves through. But, with the same mechanism we're able to enjoy books and movies and other shit, so I guess we call it even.
It's neccesary to learn the distiction between being in our heads 24/7, with our little worlds and interpretations, that to being in here right now. That's where animals live, in here and now.
Even now and then we see our pets (especially dogs, cats don't give a shit) mimicking certain behaviours, and we quickly assume their mental content is like ours, they must be thinking like us now! Probably they just want a treat, and have learned that certain behaviours will get them one. Or maybe not a treat, but to avoid the kick. Or simply our attention.