The issue is as you guys say:
-Hachiken saw a cute pig and gave it a name. He feels close to it now, as if it was his pet. Those feelings are superimposed onto other animals now, so that when he's killing, skinning or eating them he becomes conflicted.
His confliction (aka problem/dilemma) is: "When I eat this pork, it's like I'm eating Butadon. If I love him like I do, I shouldn't be eating him". He has formed a link between Butadon and pork in general. Eating pork feels like eating Butadon.
To me, he has 3 ways of dealing with this problem:
1) Accept the link and his love and become a vegetarian. "Meat reminds me of the Butadon that I love, and I don't eat pets. I'll become a vegetarian instead."
2) Remove the link between Butadon and pork. "I love Butadon like a pet, but these pigs aren't Butadon." Having Butadon as a pet and continuing to eat meat is consistent with this line of thought.
3) Degrade his feelings such that it makes it okay to eat pets. "I love Pork Bowl as a pet.. but hey, it's okay to eat the pets I love because they taste good".
Hachiken has given up on (1).. essentially in favour of (3). He hasn't considered or approached (2) yet.
It is the fact that he is tossing up between taste and "pet love" equally that causes me discomfort. I know he is not physically eating Butadon, but the whole dilemma (and why he's in such a state) stems from the fact that he's projecting those feelings onto livestock in general. If he is to consider them differently, then he has either taken approach (2) and shouldn't be worrying... or he no longer loves Butadon like a pet and should have no worries already.
I also acknowledge(ed in a previous post) that perhaps I am doing the same thing as Hachiken at the moment (eating meat because it tastes good even when I think that they're "lovely" animals that probably shouldn't deserve such a fate), so it's not like he's alone as some "bad, slaughtering figure".