I was hoping someone would bring up Bullshit Jobs. There are definitely a lot of people spending the majority of their time doing "work" that doesn't have any significant impact to the world already. I don't know that some future AI takeover would really change much, except maybe remove some vale of perception around meaningless work.

At the same time, I wouldn't necessarily say that people are currently fine getting dopamine hits from social media. Coping would probably be a better description. There are a lot of social and societal problems that have been growing at a rapid rate since Facebook and Twitter began tapping into the reward centers of the brain.

From a purely anecdotal perspective, I find my mood significantly affected by how productive and impactful I am with how I spend my time. I'm much happier when I'm making progress on something, whether it's work or otherwise.