I think it's natural to lose enthusiasm over time when a joy becomes a job.

"I don't care for coding new stuff. Everything I may need either already exists or is too complex to do on my own (and no, I won't vibe-code it, what's the fun in that?)"

I'm not sure if you mean "code gen without a plan/expertise" or just code gen. If you found joy because you enjoyed building things, now be the best time to explore and prototype something you've always dreamt of.

If you found joy because of the craft itself, low-level hands-on stuff (breadboards, esp32s, soldering, ..) can scratch that itch too.