Don't Get My Hopes Up

That fleeting moment of joy when you find the perfect function in the docs, only to have your soul crushed in four stages of documentation grief. First comes hope, then the deprecation warning (which you ignore because it still works, right?), then the gut punch that it's completely gone, and finally the existential crisis when you realize the new API designers decided your use case wasn't worth supporting anymore. Nothing says "welcome to programming" like building your entire solution around a function that's secretly on death row.