I think its obvious why it would be bad for people to stop thinking.
1. We need people to be able to interact with AI. What good is it if an AI develops some new cure but no one understands or knows how to implement it?
2. We need people to scrutinize an AI's actions.
3. We need thinking people to help us achieve further advances in AI too.
4. There are a lot of subjective ideas for which there are no canned answers. People need to think through these for themselves.
5. Also world of hollowed-out humans who can’t muster the effort to write a letters to their own kids terrifies me[0]
I could think of more, but you could also easily ask ChatGPT.
[0]: https://www.forbes.com/sites/maryroeloffs/2024/08/02/google-...