As a small cog in a large corporate machine, I get this. You just keep spinning and spinning, seemingly doing the same kinds of projects and the same work over and over again, often with no understanding of where the projects are coming from or whether or not the hard work you're putting in has any real value. And then there's constant changing and revisions and sometimes the project gets dropped, which is a clear indication that your hard work was basically wasted by higher ups who seem to have no understanding of the work that has to go into the projects.

I get paid though, so I'll keep spinning and find my value as a human outside of work.