@Mfauli

Hachiken reason for eating meat is very practical and realistic, he simply just prefers to eat meat over not eating it.

I understand the sentiment of those who become vegetarian have toward animal, but it's not realistic to expect that simply becoming vegetarian will suddenly solve the issue of having to kill animal.

If the world population gradually become vegetarian, the demand for meat would go down. This will cause the price of meat to go down and meat producer will gradually adjust their production to the market. This doesn't mean that they will kill less of the animals they have available, since there's cost to housing/feeding. They'll just reduce the amount of animals being born, so they simply won't exist in the first place.

There's also people like yourself who need to eat meat for health reasons, so that won't go away completely. It's also necessary to kill animals like pigs because they are being use in life saving medical research, so that won't go away either. Hachiken becoming vegetarian would only serve to make him feel better about the situation, it really wouldn't make a difference at the end of the day. His reason for eating meat is no worse than someone who choose to become vegetarian, it's a matter of preference.

It's also very odd to have someone who rejects the killing/eating or animals to be working in an industry that specialize in that.