After examining the problem that gratuitous suffering poses for Nietzsche's notion of life affirmation, I mount a skeptical response to this problem on Nietzsche's behalf. I then consider an orthogonal objection to Nietzschean life affirmation, which argues that the need to justify life is symptomatic of life denial and show how strengthening the skeptical defense sidesteps this worry. Nietzsche's skepticism about our all‐too‐human, epistemic position thus aids his project of life affirmation in two ways. First, it suggests that we are (...) unable to determine reliably whether a given instance of suffering is, in fact, gratuitous. Second, it provides a corrective to the moralistic need to redeem life, showing that all attempts to justify life as a whole are epistemically fraught. Before concluding, I examine Nietzsche's reasons for advancing such an epistemological argument and suggest how we might approach life affirmation in nonrational terms. (shrink)