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.
Even a very complex wine is only alcoholic grape juice. The alcohol is produced by a process called fermentation. Fermentation requires two things : sugars and yeasts. A ripe organic grape is full of natural sugars and there are wild yeasts living on its skin. As soon as the skin of the grape is broken, fermentation can begin.