I grow it (artemesia absinthium
). Some of my plants are 23-years-old. The older the plant, the more potent it is, so they say. It's a medicinal herb, and it tastes like that to keep you from just "indulging" at your liesure; in large doses, it can be toxic. It does, as the name implies, expel worms, but it's also traditionally been used as a remedy for gall bladder and liver problems including jaundice, and for diarrhea and dysentery. It was even used for promoting appetite in convalescents. NOTE: It is NOT recommended for internal use by the FDA. Externally, it's a great linament especially for back aches and sprains, and helps relieve the pain of rheumatoid arthritis.
As for the absinthe that's been made legal again here, it will either have an extremely low (per FDA - 0%) level of absinthium and/or other bittering agents from the artemesia family, or other herbs including hops (cones and leaves).
Here's the problem with wormwood: It IS addicting. Habitual use results in dimentia, chronic hallucinations, siezures, vertigo, and even death.
Hops, on the other hand, has traditionally been used for soothing nervousness, promoting sleep WITHOUT becoming dependent upon it, and for eliminating the same issues CAUSED by wormwood excesses (except death; nope, it won't bring you back.
). Also great for the liver and gall bladder and inflammation in the joints. Lots of other stuff, but you're a brewer, you already know that.