I rarely use it, and success has been hit or miss, but several hits. I occasionally need a word-processing something, like
- a way to "find one word and replace it randomly from a bank of other options without 2 of the same word replaced in succession," or
- obscure calculator ideas that I wonder about, like "If Atari's Superman game costs $27.99 on a 4k ROM in 1978, how much would that cost-per-KB rate translate to a modern game KB/MB/GB size with an equivalent modern dollar" that don't have any real impact on anything than idle curiosity, or
- if I want it to tell me a story for entertaining reading that I'm not going to republish somewhere and merely consume on the spot.
GPT is good for making a self-contained HTML that I can use repeatedly to accomplish those and use privately on my own web space, without having to query GPT every time each time, or good at telling me a story on my parameters. It's even helpful to ask it along the lines of, "before you generate this, tell me about potential conflicts I need to answer, that could arise to make the file work better" etc. It can troubleshoot its own ideas within its original question, if you ask it to, so you don't need to run it and find the errors manually.
I also use it sometimes to help brainstorm a mixture of symptoms, by having it list potential conditions which connect those dots, for me to research independently the names and traits for, from different sources to cross-reference, instead of relying on it directly for advice.
I once asked it about more efficient ways of approaching a recycling problem because I was encountering small obstacles, and it actually actively discouraged me (or rather, used predictive language which I found helpful toward understand why I ought to be discouraged) from pursuing the hobby, since it could lead to potential toxicity or fire issues, and I was glad it pointed that out before I ever got that far (storing of mixed plastics outside in Texas summers, via large eco-bricks to detour plastics from landfills).