How do you eat your rohlík?

What is so special about the Czech rohlík?

Babies cut their teeth on them, school children snack on them and Czechs of all ages can be seen munching on a párek v rohlíku (hotdog in a bun) when they need a fast-food fix. What is so special about the Czech rohlík that makes Czechs buy it daily by the dozen at their local bakeries, supermarkets or green grocers?