Interstellar Travel Is Hard, Why Bother?

Interstellar Travel Is Hard, Why Bother? : Discovery News: "Whether you live on that little imaginary island or living on a planet in an empty region of the Milky Way, the arguments are similar. To our ancestors, intercontinental travel would have seemed as insurmountable as interstellar travel does now (interplanetary travel is currently a feat we only dare send robots!). But in the case of intercontinental travel, mankind did succeed, driven by a basic need to explore."