If I spent half a day asking an agent to do something and it's a "non-working solution". I can just throw it away. I have sunk close to zero cost in it. I have no emotional attachment to the code.

It's like if I 3D-printed something I haven't modelled myself and the print goes wonky. I don't spend days trying to glue and file it back together. I chuck it in the bin and start a new one.

But if I had handcrafted the same item over multiple days, of course I'd try to salvage it - because there was a sunk cost of me spending time doing it.