As a fulltime bladesmith now that started making blades about 20 years ago as a kid, I can say that it has to be in your blood to love doing it. For me, the difference between blacksmithing and bladesmithing is that I can make the steel become "alive" through the heat treating process. It is a make it or break it(sometimes literally) moment when I pour life into a piece of steel. So unlike a blacksmith that puts character into steel, a bladesmith puts character and then breaths life into his steel. As to why we dont really make tools, well, I think man has always been fascinated with the "power" of the edged blade. And let me say, Im not slamming blacksmiths, they can shape steel in their own way like I never do. And lastly, a bladesmith is not just forging steel, he machines it, heat treats, works with brass, precious metals, hardwoods and leather too. I find the complexity of a beautiful, functional, tool to be intriguing.