I may be old, but I had the same feeling for low-level code. I enjoyed doing things like optimizing a low-level loop in C or assembly, bootstrapping a microcontroller, or writing code for a processor which didn't have a compiler yet. Even in BASIC, I enjoyed PEEKing and POKE'ing. I enjoyed opening up a file system in a binary editor. I enjoyed optimizing how my computer draws a line.

All this went away. I felt a loss of joy and nostalgia for it. It was bitter.

Not bad, but bitter.