I have my reservations about the quality of LLM generated code, but since I have neither studied ML in depth, nor compared different LLMs enough, I'll refrain from addressing that side of the debate - except maybe for noting that "I test the code" is not good enough for any serious project because we know that tests (manual or automated) can never prove the absence of bugs.

Instead, I offer another point of view: I don't want to use LLMs for coding because I like coding. Finding a good and elegant solution to a complex problem and then translating it into an executable by way of a precise specification is, to me, much more satisfying than prompt engineering my way around some LLM until it spits out a decent answer. I find doing code reviews to be an extremely draining activity and using an LLM would mean basically doing code reviews all the time.

Maybe that will mean that, at some point, I'll have to quit my profession because programming has been replaced by prompt engineering. I guess I'll find something else to do then.

(That doesn't mean that there aren't individual use cases where I have used ChatGPT - for example for writing simple bash scripts, given that nobody in their right mind really understands bash fully. But that's different from having my entire coding workflow based on an LLM.)