Because it's fun to speculate as to why anything in nature happened the way it did, yet answering this question at many levels is difficult. What makes the story attractive is the process of how the concepts used to describe this why have evolved through time.
Curiosity and the search for meaning and reason in the cosmic flow are the most fashionable characteristics of our species. For some, it is magic, while for others, it is a systematic flow of ideas. The chain of reasoning may differ from person to person, but what stays constant is the human impulse to develop models to explain what they are seeing. Often, the solutions are simple; it’s as if nature is toying with English alphabets according to some predetermined laws to make poetry.
We must not forget that when radium was discovered no one knew that it would prove useful in hospitals. The work was one of pure science. And this is a proof that scientific work must not be considered from the point of view of the direct usefulness of it. It must be done for itself, for the beauty of science, and then there is always the chance that a scientific discovery may become like the radium a benefit for mankind.
- Marie Curie