I know a good number of folks who own live blades and couldn't make a cut with any of them. While they are not swordsmen, they appreciate the beauty and the danger of these wonderful works of art. To simply study a blade is time well-spent in my opinion, whether antique or modern, and can bring great pleasure. Like cherry blossoms, each blade is different and has it's own special beauty. Looking at a live blade in a locked display case is enjoyable, but very much like an iceberg, mostly hidden from view. Carrying the metaphor forward, an iaito is only an icecube by comparison.