A world without Nukes

I'm not sure what to make out of this article. This article (appearing in TIME magazine) argues that nuclear weapons are what have kept us safe for the last few decades.

There were 2 world wars in the world without nukes. And the world with nukes has been the most peaceful the planet has ever been. There have been wars, of course, in the last 65 years. But none even close in magnitude to the two horrific world wars. The post war period has been a period of unprecedented prosperity and happiness. Even underdeveloped countries such as India have seen life expectancies shoot up in the post war era.

I think I do agree with the thesis of this article. But I still think America's bombing of Hiroshima and Nagasaki is among the most shameful moments in human history.