@emilymbender I personally find the energy use argument a bit unconvincing. Sure, AI tools use energy. So does everything else: your laptop, your TV, the infrastructure for your internet connection, heating, transport, food... The additional power used by the LLM is very likely tiny in comparison.

Google just released a report claiming that a median sized Gemini query takes 0.24 Wh. It's not a lot. See https://www.technologyreview.com/2025/08/21/1122288/google-gemini-ai-energy/

Andy Masley also wrote about it well: https://andymasley.substack.com/p/individual-ai-use-is-not-bad-for?utm_source=bensbites&utm_medium=newsletter&utm_campaign=bb-digest-secrets-of-o1-revealed

@emilymbender I'm surprised that personal privacy didn't figure among your arguments, especially in the e-mail case. I would hesitate to use ChatGPT or other cloud-based AI tools (in particular ones that are free of charge, without any data security guarantees) to write e-mails and other private documents on my behalf. Who knows what happens with the prompts I send to the cloud? Maybe they'll collect them, use them to train their next models, publish them in a data set...