@patrickstewart@philosophy a nihilist is simply someone who rejects all theories of morality and religion. That does not mean that they believe their lives have no purpose - Nietzsche, the philosopher most associated with nihilism, spent great deals of time explaining how to avoid feeling as though your life has no purpose. His main replacement for following God’s will is to follow the passion of knowledge.
In short, no. My life has no purpose is what a depressed person says.