Dwarves are *so* much cooler than elves. I mean, c'mon.
Dwarves have a high constitution, so they can survive pretty much anything and keep on going. Elves.... have pointy ears.
Dwarves are armoured, tough little buggers that are quite adept at taking down giants. Elves.... have pointy ears.
Dwarves can see in pitch darkness, can tell you a tunnel's life history simply by setting foot in it, and can macguyver together a stone or metal tool faster than you can say "but my elf can use a rapier". Elves.... have pointy ears.
About the only thing an elf can do better than a dwarf is get on a ride at disneyland. But what self-loving dwarf would even WANT to be at disneyland, anyways?
To reiterate: Elves are a bunch of wussy flower-eaters with little to no value.