If I was made to lamp street lamps 5 years after incandescent street lights were invented, while not working on any way forward, I'd probably fall into a deep existential crisis.
Ofc people dont want to become human fax machines (Morse decoders) nowadays, it would feel absurd.
But also if a role allows someone to feel satisfaction in accomplishment and in being an active member of a society it can be meaningful. For example tidying up streets/yards in low income neighborhoods can make the place look much better and you can feel like you're serving folks who are in need.
Only 2% of our efforts as a society go to getting food out of the ground.
The reason to have a job, to own property, to earn and spend money, to reproduce and fight in wars, it seems, is to maintain a valid stake in the whole game lest your masters designate you an undesireable.
For said master the more viable the alternatives to humans become, the more all those excess humans start to look like a liability.