The notion of religion and society that animals are "property" and can be killed for sake of "taste" goes against our inner intuition

"You still conflate slaughter with suffring without acknowledging the differences in method."
Yes, I am.
A big reason that animals are looked upon as "property" today is because of teachings in books such as the Torah, Bible and the Quran.

"As I discuss in Introduction to Animal Rights, the notion of equal inherent value is not in any way mysterious or metaphysical. It is a logical notion that concerns the minimal requirements for membership in the moral community, and it requires that we accord animals the moral right not to be treated as things. This is another way of saying that it requires that we abolish animal exploitation. But if we do not accept that animals belong in the moral community in the first place, or if we don’t care about acting morally, the notion of animals having equal inherent value is not going to be of much use.

We all reject human slavery because we recognize that it places those who are enslaved outside the moral community entirely; it reduces them to things. Given that we accept as a matter of moral intuition that all humans should be included in the moral community, that they should be regarded as moral persons and not things, then whatever else this requires, it requires that we abolish slavery. Similarly, if we see animals as having moral value, then, whatever else that requires, it requires that we abolish their status as property, as things, and that we treat them as moral persons. And this requires that we stop consuming them. Period.
But if we do not see any animals as having moral value–and that is a matter that cannot be “proved” in some “objective” or “scientific” way–then logical arguments about what animals should be regarded as moral persons and what moral personhood requires will be meaningless."
Quote: http://www.abolitionistapproach.com/moral-concern-moral-impulse-and-logical-argument-in-animal-rights-advocacy/#.USnI2lfA0Wk

The Torah is regarding animals as property. People kill animals -regardless of method - because of that they are regarded as "property".
Furthermore, if we care about animals, we can't ignore their life until the day they were unjustifiably killed.
"So called" "kosher"-animals live confined in very bad living conditions, just like all animals. There is NO difference between how they are treated.

They are suffering and this is applicable 'The imposition of suffering on any sentient being requires an adequate moral justification and pleasure, amusement, or convenience cannot suffice as adequate to justify imposing suffering on any sentient being'
All animals suffer at their death -regardless of slaughter method - and thus all murder by slaughter is immoral based on this premise:  The imposition of suffering on any sentient being requires an adequate moral justification and pleasure, amusement, or convenience cannot suffice as adequate to justify imposing suffering on any sentient being

Furthermore the most horrendous cases you can see of animal abuse is a consequence of animals being regarded as "property", which you preach each time you partake of animal products and endorse that animals are living confined.
That animals have a status as "property" leads to atrocities like this on "kosher"-facitilities: http://failedmessiah.typepad.com/failed_messiahcom/2012/12/animal-cruelty-at-israels-premier-glatt-kosher-slaughterhouse-causes-international-outcry-567.html