>> Why do LLMs need user data to operate? > Training data? What purpose would user data serve in your training set? What's the application of the LLM after it

>> Why do LLMs need user data to operate? > Training data? What purpose would user data serve in your training set? What's the application of the LLM after it's done training? I'm sure we all understand why the user doesn't want his private data in the training set, but I also don't understand why BigAI would want to train on this data. Except for AI-enhanced advertising, of course. But maybe... nobody should do this anyway?