I like to point out that they did not discover the DNA double helix out of the blue, but built on the work of other scientists which, all together, gave us a much better understanding of how our genes work, and how traits are passed from generation to generation. It had a huge impact on science, particularly biology, and allowed us to make great progress in many areas including medicine, and our knowledge about genetic defects that cause various diseases, and enabled us to create new treatments for many.So thank you Watson, Crick and every other scientist who helped move us forward in the area of human genetics.
http://www.nature.com/scitable/topicpage/discovery-of-dna-structure-and-function-watson-397
