Sure, the milk is nutritious but there's not enough from a rabbit to be worth bothering with for a human. And milking rabbits would not be like milking cows. Cows, and even many goat and sheep, stand relatively still to be milked. Rabbits can't and won't and there's no good way to make them.
The theory that wine was discovered by accident is most likely correct because wine grapes contain all the necessary ingredients for wine, including pulp, juice, and seeds that possess all the acids, sugars, tannins, minerals, and vitamins that are found in wine.
Pasteur realized that yeast was responsible for the conversion of glucose to alcohol. By adding yeast to a simple sugar solution, he showed that alcohol could be formed. He also revealed that the metabolism of yeast was pH-dependent; the acid-level played a role in determining wine's properties.