Extensibility Memes

You spent three days architecting an elaborate class hierarchy with abstract factories, strategy patterns, and enough interfaces to make a Java textbook jealous. You added protected methods, virtual functions, and meticulously documented extension points because "someone might need to extend this someday." Plot twist: You're the only developer on the project. The "someone" who will extend it? Also you. And you never will because YAGNI exists for a reason. The skeleton perfectly captures that eternal wait for validation that your over-engineered masterpiece was worth it. Spoiler alert: three months later you'll refactor it into a single function and wonder what possessed you to create 12 classes for a feature that validates email addresses.