You know that hamburger patties are basically flattened meatloaf that's been seasoned differently? Do you dislike spaghetti and meatballs? Most meatball recipes are identical to meatloaf. A standard, Italian-seasoned meatloaf is basically one massive meatball, just loaf-shaped.
It's just meat. Loaf just has to do with shape. I can make a jello loaf, or an ice cream loaf, or a pasta loaf. On occasion, I enjoy making wheatloaf, which is made much like meatloaf, but with ground wheat instead of meat.