How can building an application feel like a reward when you're not the one who built it?

And before you post the obvious response, no, if you're truly "100x faster", you're not reading or even thinking about anything the AI is outputting. The time math doesn't add up.

You seem to have a narrow definition of "build it". LLMs don't have agency. If I build software using an LLM I built it. Just like if I build a house out of lumber from a lumber mill, I built it even though I didn't hand carve the 2x4s.