>>761538valuable for whom?
for humans, other humans are obviously more valuable: you can communicate with them, your society and livelihood depend on other humans, humans can reciprocate your feelings and wishes, help you, work with you, party with you, live with you, love with you, create art that you find compelling… so many things completely inaccessible to other animals. Also humans also have the ability to hurt you physically and socially if youre not considerate of them, and you have natural empathy for them, because we're a social specie. So its pretty obvious that for humans, other humans are more valuable than other animals, and anyone disagreeing will rightfully be treated as a weirdo and/or a psycho.
This doesnt mean we shouldnt have some consideration for other animal life and minimize their suffering where we can afford to. Our empathy naturally extend easily to mammals or even other animals and thats not a problem in itself, as long as it doesnt impede on our own and other humans happiness (and its a reasonable argument that shit like factory farming is more detrimental than beneficial to overall human happiness).