There's a very good book by the same name about Smallpox eradication and the debate over destroying remaining stocks of the virus. I highly recommend it.
On the other hand, for the inquisitive mind (what else is a hacker?), it offers an opportunity to glimpse into another field, another world within our world. Time allowing, why wouldn't you want to know all the things? Knowledge allows synthesis, synthesis allows creativity, creativity allows change and growth.