I don't think you understood my posts. Go back and reread them. You need to explain why animals "must" suffer. Why must we kill them? Is killing animals the only source for protein? Is it the only source for calories? Etc etc. Some would argue that killing animals isn't necessary. They would object to mr. stun gun because he's inflicting pain and suffering (it's painful to be hit with a stun gun...would you agree?) that is not necessary (that specific cow does not need to die). They would object to mr. stun gun even if he never missed or if the cow did die right away.
Following along yet?
you re disapointing here.
The suffering animals feel depends of the structure of their brain, it means that, considering none of them but humans have prefrontal lobes, no animal on earth "feel" suffering the same way humans do with their more evolved brain. Which basically means there are different kind of sufferings, which are felt completely differently because the biology, the phisiology of our brains and hence the way we feel suffering is DIFFERENT.
An animal can have fear and pain, a plant can not. Although never 100% certain, it makes sense to assume that because the purpose of fear/pain is to move away from the source, and plants are not able to do this. Another point is that a plant has no nervous system.
Vegetarian food can provide complete nutricion for a human being. A human being has to eat to live.
From the above it's valid to say that one should not kill animals, because the alternative, plants, is the more ethical alternative if there must be something killed for food.
I do not eat meat. If I would die without eating meat in a situation, I would eat it for sure.
Fear just like suffering, in other animal species aside humans, are different than the ones humans can feel because they only have underdeveloped limbic systems and cortexes. They dont have our prefrontal lobes and neo cortexes, they cannot physically, materially, feel fear and pain the same way we do.
Hunting chimps would be inhumans as they re the closest to having brains like ours. But every other animal species just dont feel fear or death the way we do. You re comparing apples and oranges and it's sheer ignorance.
As for plants... they develop strategies of survival to fight other plants and ominate them too...
Also people who hunt or fish, respect animals, nature, waaay more genuinely than those who only eat meat coming from the supermarket and who pretend to be the most "human" lifeforms on earth. In fact they re just ignorant kids, pussies who need to grow up.