In my experience, there isn't a one-size-fits-all answer to how often you should replace your gaming PC. It largely depends on your personal preferences, the intensity of your gaming, and advancements in technology. If you're a casual gamer, your PC might serve you well for 5-6 years, but for hardcore gamers keen on the latest tech, you might find yourself upgrading every 2-3 years. But remember, you don't always need a full replacement - sometimes, updating certain components can give your system a new lease on life. The key is to balance your gaming needs with your budget.