Yet, once the doc told me that I was prediabetic and would need to ease up on the sweets, I knew my days of enjoying this treat would come to an end if I didn't make some changes.
Here's my compromise. 
I halved the amount of butter and sugar, and doubled the number of bananas. It worked! 
Lori's Banana Bread 
Ingredients 
1/4 cup butter 
1/4 cup sugar 
2 eggs 
6 bananas (thawed if frozen; mashed if fresh) 
1/3 cup milk, mixed with 1 tablespoon vinegar 
2 cups flour 
1 teaspoon salt 
2 teaspoons baking powder 
1/2 teaspoon baking soda 
1 cup walnuts (or pecans, or other nuts) 
Instructions 
Preheat oven to 350°F.
Cream butter and sugar in a stand mixer.
Add the eggs and bananas while the mixer is going, one at a time until blended, then the milk. 
Remove 2 tablespoons of the flour and mix with the nuts until they are well coated. 
Sift the flour, salt, baking powder and baking soda together; add slowly to the mixture while the mixer is still going until all is blended. 
Turn off the mixer and fold in the nuts.
Pour into a well-oiled loaf pan.
Bake for 45-50 minutes.
Turn out on a cooling rack. Serve warm or cold.

