Other surfaces to avoid include granite, steel, porcelain, and Corian. Due to their hardness, they all cause knife blades to dull rapidly (almost immediately, in fact). This isn’t only inconvenient; it’s also dangerous. Cutting with a dull knife requires extra pressure, and can easily cause slips or other sudden movements that put you in danger of suffering a severe cut.
Remember: it’s not the food that dulls your knife blades, it’s the cutting surface. Because cherry end grain wood yields under the pressure of the knife blade, it helps to keep your knives sharp, which keeps you safe in the kitchen.