"wine is a constant proof that god loves us and loves to see us happy " what does that mean?

Before Louis Pasteur studied fermentation, we didn't have any idea how sweet liquid turned to alcohol. At times the fermentation process was called "God Is Good". It was generally considered miraculous that alcohol even existed.

Also, for most of history, alcohol was safer to drink than water. Water had pathogens in it that made us sick and sometimes caused death. Anything over about 4% ABV kills most harmful bacteria.

Finally, Franklin's love of fine wine was as well known as his ability to create a memorable quote.

I thought the church was of the opinion that alcohol was "the Devil's brew!" <slap-slap>

[Aunt White Adder, Black Adder II, episode 5: "Beer"]