Yeah, I've had so many experiences of coming back to something I wrote 6-18mo ago, and being so relieved that I wrote it "simply" and with clear comments explaining the intent/purpose. Not only a great refresher, but anyone else could also gain context and easily make changes. I think there's also an aspect of that "broken windows" phenomenon[0] where inscrutable code existing in a project becomes a sort of implicit acceptance of more such inscrutable code being added to the project.

[0] https://en.wikipedia.org/wiki/Broken_windows_theory