I have never ever heard of anyone eating a banana peel, but i have read about how wonderful the peels are for our plants and bushes, so that is what i do with my banana peels. Sometimes, I put them in the blender with some water and maybe some greens that are starting to be wilted, blend all that up with some water, and then put it under the roses and tomato plants.
Some days, i am in a hurry, and just throw the peels under the azaleas, and that seems to work fine, too.
Kroger sells the riper bananas for half price, and i always buy those when they have them out. We eat the ones that are still in good shape, and the ones with lots of brown speckles, I slice up, put in a freezer bag and freeze them; and those are the ones i use when I make smoothies to drink. The extra ripeness is great in a smoothie, and the mushiness is not problem, since they are being blended into a drink anyway, and they chill out the smoothie with out needing as much ice cubes.
When I have strawberries, I do the same with those, or any other extra fruit that I want to use in a smoothie.