Work doesn't benefit humanity, work is the chains that keep us living the same day over and over til we die.
Your idea of benefit to humanity clearly doesn't involve the end of work, mine does.
AI can end work for most of us but that has to be what we want, can't be limiting it all the time bc of stupid reasons and expect it to have all the answers as if it weren't limited, that's silly.
If AI disappeared tonight so too would the future where nobody works in a call center or doing data entry or making button graphics to client exact specifications for a website nobody will ever see.
This is the Old World we live in rn - I don't want it to stay.
work is what gives us purpose and meaning. or do you want to live in wall-e world?
there is no long-term happiness without struggle and mastery.
it sounds like what you want is an end of menial labor that is treated poorly. why confuse that with work?