I think it should be banned and what's more, the soft drink companies must think so too. They have been switching over to Splenda sweetened drinks for awhile now.
I feel much better since I switched to Diet 7-Up made with Splenda. I don't believe it is any other ingredient in the Diet Coke that was making me tired, hungry and my sugar actually ran higher when I was drinking it.
My doctor said that there was nothing wrong with aspertame but I doubt that.