What benefits?
All along the way from construction (big bore) to system designs for cryogenics on never-before built large rings, superconducting materials and testing, build of specialty SC magnets, super large detectors for never-before ring energies, the computing systems that were being developed to anaylze the sensor data, SC cable winding machines, presses, cable testing machines, engineering for massive 10k and 15k amp dc power supplies, radiation detection and anlysis, and on and on. All designed first-time machines. And this is only for construction and setup.
Sounds like fun - but I fail to see the "benefits" (that the public should care about, anyway) in construction (big bore), never-before built large rings, specialty SC magnets, super large detectors for never-before ring energies, or radiation detection and analysis.
There are probably a few genuine public benefits in your list - but none that couldn't be accomplished less expensively (and none that are within the feds' Constitutional mandate, not that you claimed they were).
When operating on daily basis, who knows. What is learned/benefits of FermiLab, CERN, etc. The main benefit is to find the Higgs boson,
No direct public benefit there.
and then to begin put the pieces back together in desired ways for the desired purposes - drugs, materials, etc.
Are you claiming that finding the Higgs boson will advance drugs, materials, etc? I find that extremely hard to believe since the Higgs boson is a mechanism to resolve theoretical contradictions between already-known facts (nonzero fermion and weak boson masses on the one hand, and electroweak gauge symmetry on the other).
Were/are there any benefits from NASA? With your line of reasoning, that should never have been funded.