Why in the world do you "hope" that I was not being serious, and not being sincere? Whatever you may believe to be the norm in ethical anthropology, i.e. however much you may believe that seriousness is fitting only in a discussion of exclusively human matters, according to your vision of an anthropocentric cosmos, nevertheless there really exist some people who have high regard for nonhuman creatures, and consider justice for humanity, as a supreme human virtue, to include our treating those creatures with respect, dignity, mercy and compassion.