I grew up in the age of cooking from scratch. Before the microwave, and very few packaged/convenience foods. Cake mixes were around when I was a kid, but no cook worth their salt would use one.
I do use my microwave, but still make almost everything (except pasta) from scratch. So, there's a reason I notice the difference when using real buttermilk. It's the cross we gray-haired great-grandmother types have to carry....

I also have a couple of pancake recipes that just use milk. Perfectly acceptable, but if you can get real buttermilk, so much better.
Ingredients:
1 1/2 cups all-purpose flour
3 1/2 teaspoons baking powder
1 teaspoon salt
1 tablespoon white sugar
1 1/4 cups milk
1 egg
3 tablespoons butter, melted
Directions:
1. In a large bowl, sift together the flour, baking powder, salt and sugar. Make a well in the center and pour in the milk, egg and melted butter; mix until smooth.
2. Heat a lightly oiled griddle or frying pan over medium high heat. Pour or scoop the batter onto the griddle, using approximately 1/4 cup for each pancake. Brown on both sides and serve hot.