A few years ago when I had some blood work done, I was told I was low in potassium and to start eating more bananas. Once I learned that bananas were also a high fiber food, I had no problem adding them to my diet.
One of the things I like about bananas is that they are so convenient and portable. You can take them anywhere with you for a quick snack or to add to your lunch. They are easy to peel, and just eat as they are. You don't have to slice them or add them to other foods to be delicious.