No one knew what the hell you might use an electron for when it was first hypothesized, I think we figured out useful things to use it for.... dragon pixels!
One cool thing I've seen as a possible use is to "de-mass" spacecraft (since the Higgs field imbues other particles with mass) so they can travel at lightspeed without needing infinite energy to accelerate their mass to lightspeed. Doesn't do squat for time dialation but travelling at the speed of light would mean that from your perspective, all trips of all distances would be instantaneous.
Regards,
Mg
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