Bioethics as a philosophical discipline deals with matters of life and death. How it deals with them, however, depends on the kind of life particular bioethicists focus on and the kind of value they assign to it. Natural-law ethicists and conservative Kantians emphasize biological human life regardless of its developmental stage. Integrative bioethicists also embrace nonhuman life if it can be protected without harming humans. Liberal and utilitarian moralists concentrate on life that is sentient and aware of itself, to the exclusion of biological existence devoid of these. Extinctionist and antinatalist philosophers believe that life’s value is negative and that its misery should be alleviated and terminated by not bringing new individuals into existence. As the last-mentioned approach reverses the idea of life’s positive value, it could be called oibethics.