Apart from the thermal properties mentioned already, and other more esoteric uses, they also happen to be really strong, and if we can scale up our manufacturi

Apart from the thermal properties mentioned already, and other more esoteric uses, they also happen to be really strong, and if we can scale up our manufacturing processes, they should become quite cheap as well. Imagine all of the applications for a transparent material stronger than steel! We're a way off yet, but it's feasible.