I am trying to stay open-minded here.
As it is, I don’t see a usage that justify install a privacy nightmare on the system level, an app, or even a browser extension.
The only time I have been using any AI stuff lately is when Brave_Search/Copilot_on_Bing do a quick summary of the search results, and give me the link to the website. It don’t need to constantly see what I am doing for that.
Company communications mainly. I just put the bullet points in there and an example from the past, then say make these bullets sound like that.
Language learning.
Writing code or troubleshooting code.
Creating custom art for friends and family.