Okay, enough devil's advocacy. Now some facts. Good wine tastes good by itself. But even lesser wine may be the perfect beverage for the enjoyment of food. None of this is an accident.
Wine is an ancient beverage which predates by quite a bit every other drink other than water.
There is evidence that grapes were raised for making wine before any other crops were raised for food. In fact, for those without refrigeration or antiseptic conditions, the conversion of grape juice into wine occurs with no assistance from man. It's almost impossible to keep the process from occurring. In the proper amounts, drinking wine with a meal is better for you than not drinking it. Wine can even be said to be a better beverage for the human body than water.