Drones
The geek in me goes “I want one NOW!” There are some amazing canyons in my neck of the woods and I would love to explore them with a drone.
The historian in me is fascinated by the military implications. Send one of these things up from a tank or armored transport and you’ve got an instant recon with no risk of life.
The libertarian in me is horrified by the loss of privacy. I don’t want my neighbors peeking in my back yard. And I certainly don’t want the local cops using these things to peek in windows.
If he were still alive, I think my grandfather would be pulling out his shotgun.