Antifrustrationism is an axiological position proposed by German philosopher Christoph Fehige, which states that "we don't do any good by creating satisfied extra preferences. What matters about preferences is not that they have a satisfied existence, but that they don't have a frustrated existence." According to Fehige, "maximizers of preference satisfaction should instead call themselves minimizers of preference frustration." The moral philosopher Peter Singer has in the past endorsed a position similar to antifrustrationism (negative preference utilitarianism), writing: