For something close to home, imagine a gaming laptop that runs on full performance mode without generating any heat. Imagine datacenters running full workloads without needing cooling.
Electromagnets are built with coils of copper magnet wire - an efficient conductor but generates waste heat - what if we could build those electromagnets with zero resistance? Electric motors become very exciting. The electrical <-> mechanical relationship gets transformed.
We use electricity for everything, so it's hard to communicate the extent of the revolution. People keep bringing up MRI machines because they're on the ragged edge of electromagnet usage constrained by cooling.