Would the world be a safer place without nuclear weapons?

I don\'t have to mention about the world without nuclear weapons. I am sure that we can live under the much safer places. Radiation only needs in medical fields and industrial areas which diagnose diseases in human body and inspect proper products. It is true that radiation can help us finding diseases that lead to fast treatment before it becomes more severe. However, if it uses in military purposes, our nations will be disappeared in our planet. We have seen the effect of nuclear weapon in Japan. There are still a lot of people who have been suffering from the side effect of nuclear bomb. Although, some victims are affected far from the middle of explosion, they might have a possibility of cancer because it\'s special characteristic. There are radiation in anywhere from ground to sky, so humans are exposed to it anytime even though, it is a small amount, there will be some risk of cancer according to the total doses which humans receive. So, we have to try to reduce the dose even in me