Because it's a really cool concept that a lot of engineers and researchers are excited about, despite the lack of practical applications.
Yes, sometimes that's all it takes.
and the the Dept of War can imagine creative enough uses for these things to keep funding them (it's how we got computers and the internet too)
and the the Dept of War can imagine creative enough uses for these things to keep funding them (it's how we got computers and the internet too)