Would the Rebel Alliance have been able to defeat the Death Stars and the Empire flying a bunch of wooden blocks? No. Then why wouldn't you want to store your kitchen knives in this X-wing shaped knife block that is clearly a superior design to a block of wood?
It's easy to be upsold into buying a huge knife set, while in reality, a properly handled chef's knife can tackle 99.9% of the cutting you have to do. But one knife alone in a block can look so lonely.