Sometimes I do wonder though, even "good" jobs (for some definition of "good"). For example, I can work on some tech, say mp5 (made that up), knowing full well

Sometimes I do wonder though, even "good" jobs (for some definition of "good"). For example, I can work on some tech, say mp5 (made that up), knowing full well it will be replaced in 5-10yrs by mp6. Now I get maybe the person/team who invented mp5 are bringing the world forward. But as some programmer on Windows, MacOS, Android, iOS, Safari, Chrome, or Firefox adding mp5 support to those OSes there's a part of me that knows my work is temporary and it bugs me for some reason. And that's not even at the point of BS for most people saying their job is BS. another random thought is when you know you're being asked to do something in an inefficient way. The job might not be useless but your time is being wasted and it feels awful.