Here are a few reasons why dumplings are one of my favorite foods:
Variety: Dumplings come in allot of variety. Different fillings as well as different types of cooking give different tastes. Not to mention the addition of sauces.
Cheese: Most dumplings are only made better with some melted cheese, either in them or on top of them.
Mashed in a Skin: The filling all blends together in a nice mash-up of different flavors. It is kind of like a taste explosion after you get through the skin.
Portability: Unused dumplings can easily be taken with you as leftovers. The caveat here is that they lose some taste being reheated.
Cooked, Not Premade: Most good dumplings are made and cooked (to some degree). This makes them nice and not having allot of preservatives.