Artificial sweeteners are like competing pharmaceutical companies, trying to duplicate the effects of a successful drug, with different chemistry, to avoid patent violations. Refined white sugar is at least a well tested substance in a worldwide, long term market, if I have to find one thing nice to say about it.
If we consider refined white sugar to be an over the counter drug, like acetaminophen, you would never mix a couple teaspoons of Tylenol into your coffee in the morning followed by a donut with a few more teaspoons of fried Tylenol inside. You wouldn't follow that by several more teaspoons of generic acetaminophen with lunch in a diet soft drink. The moral of the story? Eat sweet whole foods, like bananas, to get your fix and avoid eating foods loaded with refined sugar or powdered chemicals that never had anything to do with a plant at all.