Seneca gave up his views on vegetarianism, and animal rights, in order to pursue his political dreams. He, a man who gave up his own views, was a tutor to Nero! The speechwriter of George W. Bush was a vegan (was, as in he quit).
Is a good future more important, does it suit better than respecting animals? Animals, by utilitarianism, aren't capable of feeling pain the same way humans do--physical yes, mental no (or so it has been argued). By contractarianism animals don't yield the same respect. Essentially animals are respected because of indirect duties, for a large part. Are our indirect duties to humanity more important than ourselves?
No. If we each selfishly followed our own paths---that is not humane at all! If I murder this man, it may not be humane, but it suits my needs better. If I kill and eat this orphaned infant it will provide me nourishment, and maybe I believe it will provide a spiritual benefit enabling me to reach my goals more efficiently, so it's OK. The infant has nobody to care about it to be harmed by a utilitarian perspective, I'm good with it----but it does conflict to duties to humanity. If someone followed that selfish (and grotesque) path ---there is no humanity in that person, by Western standards.
What else will a person who can eat an infant without guilt do? If you can go against your principles of ethics for a job--what else might be a reason? If Seneca abandoned his vegetarianism for a political position--what else might a man abandon in favor of something material?
I'm not quite sure that I want to know!
~Jessica
a.k.a. "Simplice"