Not a physicist or engineer but I can speak to it as a layman. Superconductors enable some deep magnetic magic which is used in all kinds of things from fusion

Not a physicist or engineer but I can speak to it as a layman. Superconductors enable some deep magnetic magic which is used in all kinds of things from fusion reactors to MRI machines. Current superconductors require cryogenic temperatures to operate though, which limits their applications, makes them extremely expensive to operate, and too complicated for large scale manufacturing. An ambient temperature superconductor, even if the material itself was hideously expensive, would make these extraordinarily powerful technologies much easier to develop and deploy.