The people shooting down UFOs to retrieve them are shooting down egg-shaped UFOs which is what the amphibious aliens I encountered were in so they're shooting down benevolent teachers. The alien races observing us haven't destroyed us yet, our punishment may be their disapproval and hatred only but not to the point of going to war with us obviously or our planet would be disintegrated. Perhaps they feel sorry for the other life forms on this planet but most likely not us.