I want LLMs to answer simple, but tedious questions that arise when I do the thinking. I want them to help me find relevant sections in multi-thousand page datasheets regardless of whether I happened to use the same synonym that documentation's author has used. I want them to remind me the meaning of a term that was defined 12 chapters ago without me having to context switch and look for it again. I want them to consolidate information spread over 6 PDFs that I need to look at to understand something.
I want them to be an interface between me and reliable resources. I want them to essentially facilitate ad-hoc fact retrieval without requiring me to master field-specific jargon first. I don't need them to do any thinking, that's my job. I don't want them to try to answer my questions, I want them to point me to resources that let me answer them and save me the time on searching them in the process. You don't need to know where to look beforehand if you're a machine that can ingest whole libraries in seconds - so let me actually benefit from this power rather than try to provide me with a sketchy equivalent of a clueless intern trying to make a good impression and not realizing how tremendously bad they're at it.
I believe LLMs (or, more specifically, complex systems utilizing LLMs) can end up being incredible productivity boosters, but right now they're being so hopelessly misapplied that it will take a good while for them to get there. LLMs can already be somewhat helpful if you approach them carefully, but they're still far from life-changing - unless your life can be changed by reducing the amount of boilerplate you need to type to code, then I guess you're already happier.