For some people, they lack the resources to run an LLM on a GPU. For others, they want to try certain models without buying thousands of dollars of equipment just to try things out.
Either way, I see too many people putting the proverbial horse before the cart: they buy a video card, then try to fit LLMs in to the limited VRAM they have, instead of playing around, even if at 1/10th the speed, and figuring out which models they want to run before deciding where they want to invest their money.
One token a second is worlds better than running nothing at all because someone told you that you shouldn't or can't because you don't have a fancy, expensive GPU.