Wine may cause accidents and cirrhosis of the liver, but it can also be good for one's ego, helps excercise and can promote therapeutic dreaming. Wine contains alcohol.
Alcohol does many and varied things to our bodies.
Its effects on our sexual function alone make for an interesting little snapshot. But only if you drink too much. Ask anyone who drinks two or three glasses a day and they'll agree wine is great and healthful. In this sense, wine is good for you. But alcohol is bad.