Thanks for that comment. I felt I was the only one thinking that these drones in the sky constitute a major pollution and visual agression. In my case, it triggers the exact same revulsion I have when I discover a big spider walking on my ceiling. Yuck.

At least with trains, roads and airports, we can move away from the source of pollution. With drones, great, nowhere to hide. Pollution comes to you. Not to mention that I am sure soon we will have ads displayed on the side of the said drones. Did I hear "Blade Runner"?