I swear we had this same exact damned thread last summer or something like that.
Chopsticks are badass weapons of death. A well thrown chopstick will go through a steel plate. And if you get caught with some chopsticks, what are they gonna do to you? Cop: Yeah chief, we had to bring him in, he was packing chopsticks.
Chopsticks also allow you to show off your manual dexterity.
As for whether a fork is superior to a pair of chopsticks, it all depends on what you're eating. Keep in mind that Asian cultures that use chopsticks have evolved food preparation to match the eating utensils. While I can eat almost anything with a pair of chopsticks, I tend to eat all Asian foods with chopsticks but western foods I eat with a fork.