That's the feeling I get when I try to use LLMs for coding today. Every once in a blue moon it will shock me at how great the result is, I get the "whoa! it is finally here" sensation, but then the next day it is back to square one and I may as well hire a toddler to do the job instead.

I often wonder if it is on purpose; like a slot machine — the thrill of the occasional win keeps you coming back to try again.