Ask a hundred different sailors and you'll get a hundred different answers. For some it's a quest for knowledge, for others it's the search for adventure and for others it's the drive of competition. Challenging, solitude, ability, wonder, escape, acceptance, self-satisfaction, the list could go on and on and I'm sure for most it is a combination of some or all the things listed.
But I can only speak for myself. When I look back to when I began to where I am now in my sailing and my life, the essence of sailing has had different meanings. As I grew as a person, as a way of thinking and living in the world, my sailing grew and reflected that time in my life.