The majority of people do not have the time to rinse and soak rice overnight, nor does everyone have a rice cooker. Many people are on a diet and looking to cut down on refined processed foods and want to add more whole grains to there diet.
None of these versions require any salt or butter. I never add any salt or butter to cooked rice and I always cook rice in the microwave. You can eat it plain as is or with beans, salsa, chicken or fish which already have there own flavors.