Your opinion on necessity is a red herring. That isn’t the system we are in. We are in a market system (for better or worse) that determines what jobs exist and how much they’re worth in compensation.
Besides if it were all about bare necessity, we could pare down most jobs. I mean heck, let’s go back to being hunter-gatherers. We don’t need anything more to survive as a species. (And all this bullshit we do every day dumping greenhouse gases into the atmosphere will guarantee our demise, most likely).