> For example, if I want to run some napkin math on something, like I recently did some solar battery charge time estimates, an LLM can get to a plausible answer in seconds that would have taken me an hour.

Exactly. I've used it to figure geometric problems for everyday things (carpentry), market sizing estimates for business ideas, etc. Very fast turnaround. All the doomers in this thread are just ignoring the amazing utility these models provide.