Atomic Testing Museum -- Las Vegas, Nevada

At the Atomic Testing Museum in Las Vegas, Nevada (several blocks East of Las Vegas' more famous attractions), one is introduced to the background and marvelous science of the hundreds of atomic tests performed in the Nevada desert North of Las Vegas from the 1950's until 1992. The quiet of the museum contrasted starkly with the noise and glitz of the Vegas Strip. I have visited the museums of Oak Ridge, Tennessee, Alamogordo and Los Alamos in New Mexico, and Washington state's Tri-Cities previously to learn about the development of the American nuclear weapons ... and their use.
As a child of the nuclear era (yes, I learned to kneel in the school hall and cover my neck in case of a nuclear attack), I am enthralled by the spirit of the developers (scientists and others), the technological breakthroughs, and the scope of planning and development necessary. But I am also appalled by the threat in those gleaming products.
As a Christian, I wonder why God allowed humans to discover the secrets or even the prior question, why God allowed the possiblity of nuclear destruction even to exist?
As a human, I am hopeful, but confused, by the comment of one scientist's comments recorded at the Las Vegas museum, who stated that the nuclear testing proved that we could never use the weapons but he also recognized the value in having them -- Not to be used, but certainly to be possessed. Can we humans really handle that much power? Are recent efforts to reduce nuclear weapons really adequate? And, of course, what about the terrorists? Will we become the victims of our own weapons' development?