Nihilism

Nihilism is the philosophical viewpoint that denies or lacks belief in any or all of the meaningful aspects of life. Most commonly, nihilism is presented in the form of existential nihilism, which argues that life is without aim meaning, purpose, or intrinsic value. Moral nihilists assert that morality does not exist at all. Nihilism may also take an epistemological, ontological, or metaphysical forms, meaning that, in some aspect, knowledge is not possible, or reality does not exist. (Wikipedia)