Why are people so happy about advanced AI if it may harm society?

People are happy because AI and robotics are developed so much, as if it will do favors for them. Since AI and robots won't be good for most people, they will just take our jobs.

The rich will see us as useless resource consumers. Even so far, AI only did bad things rather than good things for the society.
Why are people so happy about advanced AI if it may harm society?
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