Water has a calming effect on most people. Waterscapes, from pounding surf to placid lakes to whitewater streams, are popular destinations for recreation and humans have long established settlements along shores and rivers. While the latter served a number of practical needs (water, food, transportation), man has undoubtedly received a great deal of comfort and inspiration from nearby waterways.
After all, life evolved in the sea some 3.6 billion years ago and did not emerge onto land until 400 million years ago. We, like other life forms, are composed primarily of water and humans spend the first nine months of their life floating in a uterine pool. We can't survive more than a few days without this precious substance and its presence or absence has governed man's colonization of the planet.
Even those of us who prefer dry climates relish an escape to the beach or mountains now and then. Water is entrenched in our souls and the sight, sound and feel of it calm our troubled minds.