One of my biggest annoyances when talking to (especially older) people about my job as a software engineer is when they’re like “but how are you still working on it? Don’t you just like, make the app and you’re done?” They don’t realize the amount of work it takes to write everything, because they don’t understand the complexity involved in writing software.
Though it’s not as bad as “so I have an app idea… It’s like Uber but for clothing”