In ethics, welfarism is a theory that well-being, what is good for someone or what makes a life worth living, is the only thing that has intrinsic value. In its most general sense, it can be defined as descriptive theory about what has value but some philosophers also understand welfarism as a moral theory, that what one should do is ultimately determined by considerations of well-being. The right action, policy or rule is the one leading to the maximal amount of well-being. In this sense, it is often seen as a type of consequentialism, and can take the form of utilitarianism.
It is important for various discussions and arguments about welfarism how the nature of well-being is understood. Pure welfarists hold that this value is directly determined by the individual degrees of well-being of each entity. Impure welfarists, on the other hand, include other factors related to well-being, like whether the well-being is equally distributed among sentient entities. Hedonists try to give a more substantial account of well-being by holding that all and only experiences of pleasure and pain constitute someone's well-being. This view is rejected by desire theorists, who equate well-being with desire fulfillment. Objective list theories, on the other hand, also include objective or mind-independent factors as constituents of well-being.
