You need people to do things, absolutely. You need to take care of old people.

Do you need to have insurance agents? Do you need marketing, or the tax industry, or Wall Street, or managers? Do you need a sales department or an accountant? Do you need lawyers for 95% of the thing lawyers do? Do we need 4 different fast food restaurants in every shopping center?

I'd go so far as to say most jobs today aren't necessary. They're invented by humans to do abstract things that affect how humans interact and organize. Or, they're only necessary because of this arbitrary organization

They're also based on centuries of tradition and/or negotiation rather than intentional design, which means we spend a lot of unnecessary time navigating it.

I don't think we're ready to go without this kind of bureaucracy, because the pressures of late stage capitalism has done a real number on us all. Maybe in a couple generations. But a properly designed system would most certainly free up a hell of a lot of time to care for our elders