The obvious answer is to know what time it is. However, the reason a majority of watch enthusiasts have a fascination for fine time pieces has to do with the fact that they are addicted to the meticulous mechanical complexity and intelligent design by many of the top producers like Jaeger Le Coutre, Audemars Piquest, Girard Perregaux, A Lange & Sohne, Patek Philipe,etc who produce limited pieces per year....not mass-market quartz junk. These watchmakers are true artisans with a critical eye and an immense attention to detai dating back over 500 years ago. The same can be asked as to why people still listen to vinyl or why people restore vintage automobiles?