That's fair. You kinda get stuck in a certain "mode" though. You start to self-identify with the things you do "I make data science tools for medical informatics". And it's sort of blinding, in a sense. If I enumerate my skills on a CV, the types of companies that would identify with them are in the same space. Doing something else, say games, apps, whatever it is that people "enjoy" interacting with: I'd need to start at the bottom again. No longer senior engineer/team lead ... but rather that young newb. That's frightening too.