Why? Because when you abort the firstborn of any, nature takes its vengeance on the subsequent children. In the Old Testament, the firstborn of every being, animal and man, was dedicated to the Lord. There’s a special punishment Christians would suggest.
Swift or smooth, broad as the Hudson or narrow enough to scrape your gunwales, every river is a world of its own, unique in pattern and personality. Each mile on a river will take you further from home than a hundred miles on a road.