Death, at very least, causes stress to animals, even if it is "merely" the fear of the injection before they are put to sleep. Stress is suffering as well.
In a lot of slaughterhouses, especially those where chickens are slaughtered (and our idiotic European government keeps promoting chicken meat...), animals get their head cut of, or something similar happens, while they're still alive and awake.
Even if I agree that you can't feel pain when you're death, the fear of dying or the act that causes death does surely hurt.
Death, at very least, causes stress to animals, even if it is "merely" the fear of the injection before they are put to sleep. Stress is suffering as well.
In a lot of slaughterhouses, especially those where chickens are slaughtered (and our idiotic European government keeps promoting chicken meat...), animals get their head cut of, or something similar happens, while they're still alive and awake.
Even if I agree that you can't feel pain when you're death, the fear of dying or the act that causes death does surely hurt.