Straights are kewl. Straights are green; nothing wasted consumed or discarded. Easier on the skin. More history. More fun stuff to do and more challenges and skills to develop, like honing and rescaling. More meditative and relaxing. Never run out of blades. Straights are uncommon. They set the user apart from the thundering herd. Straights can be works of art much more so than a DE. There is also a sort of elitist thing too, I think. Mostly I think it is the elegant simplicity of one piece of steel as a self contained monolithic tool that lasts for many generations.