When should you throw away a pan?

Good day, everyone! I'm curious about something related to our daily lives. Let's say you're in your kitchen, cooking up a storm, and suddenly you come across a pan that's seen better days. Now, the question is, when exactly should one consider throwing away a pan? Is it when the handle starts to loosen? Or maybe when the non-stick surface starts to flake off? What are the telltale signs that indicate it's time to bid farewell to an old, trusty pan and invest in a new one? I'd love to hear your thoughts on this!