I know, I actually love the taste of diet coke. Any sort of regular soda tastes downright awful to me, it's just so damn sweet. But I do have to admit that diet soda is really an acquired taste. It's almost as if it's unnatural to like the taste, but after you drink it a while you like it.
There is one diet soda that tastes exactly like the regular version, however: Diet Squirt. Very tasty. Sometimes I buy a regular one accidentally and drink half before I realize it's not diet.