The fruitcake myth is one of those bandwagons a couple of comedians (f**k you, Jay Leno) got started by ridiculing them from the stage (or teevee), and millions of idiots who've never had a single bite of fruitcake have mindlessly continued to regurgitate (no pun) ever since.
The truth is, there are many varieties of fruitcake made in several different ways, there's even an orange-slice cake (made with sugary orange-flavored gelatin slices) that is often passed off as fruitcake, though it isn't. They are very sugary rich, tend to be rather heavy for a confection, and depending on the syrupy and sometimes alcohol-based ingredients they sometimes come pre-soaked in, may be an acquired taste. Still, to make an across-the-board judgment that ALL fruitcake is horrible only displays your lack of experience and your closed mind. Most types are actually quite good (and as some here have noted, rather addictive), and anytime you're looking for the perfect food to go with a great cup of coffee, screw doughnuts - hack off a slab of that fruitcake - mmmmm...almost better than sex.