Would You Embrace Cloaking Technology?

German scientists have been researching cloaking technology in three dimensions and ironically have been practicing on gold. I could go off on how funny and odd that is, cloaking gold? I know a lot of money has disappeared in this economic crisis, but it has been fiat currency, to make gold disappear, that is another story! In all seriousness, this technology has been researched for some time now with some success achieved in two dimensions and now in three dimensions, using gold. Those of you who watch or read science fiction, for example, Star Trek, the Romulans, Klingons, and Jem ´Hadar, all use cloaks. The Jem ´Hadar from Deep Space Nine are unique in that they cloak themselves and can sneak up right in front of you without you even detecting their presence, the Romulans and Klingons cloak their ships, so in all these examples, the cloak is used for battle or to move from place to place in stealth.
Now I am racking my brain trying to find some purpose that cloaking will benefit humanity and I cannot. Maybe the answer eludes me in this time and place, but all I can see is the military of any country eager to get its hands on this kind of technology as well as police. Not even the Federation in Star Trek used cloaking technology in order to keep the peace with those who used cloaks and the Federation did not believe in spying on its own citizens.
So again, I wonder why this type of scientific study is taking place?

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