I'm not convinced arguments about worthwhile are useful. If you're not involved in basic industry, then any job is the same, right? We don't NEED anything but food, housing and ... that's about it.
There are jobs that are objectively make-work positions, especially in the public sector, and the penumbra of "beltway bandits" where there is no individually expressed demand that directly or indirectly caused a requisition for an additional worker to, for example, touch your balls with a blue glove.
