I'm still on my transition phase, having moved from desert spoons to teas spoon in my coffee and diet softdrinks, though I do like a full fat cola with food. But have been interested in this berry they have which makes bitter/sour things taste sweeter. That is something that does seem to be a more palatable approach to quelling sugar addiction and could make for a rather nice cup of coffee, evern the cheaper stuff. http://en.wikipedia.org/wiki/Synsepalum_dulcificum is the bean which I'm on about and you may of heard of it already in the name `miracle fruit`.
All that said, I don't think anybody can name a person that has regretted giving up sugar, though I'm happy to sit in the moderatly decling usage and wont deny it.
But we all blame the sweets as children, even though as children we have a bias towards sweet tasting foods. This is genetic and a health preserving one as well as sour/bitter foods are in general covers most posioness edibles and it is not until we get older do we loose that bias and aquire a more palatable acceptance to bitter/sour tasting foods and drinks. Our eyesight also is biased to the red spectrum when were younger and biases towards blue as we get older, again red being dangerous in nature.
So geneticly there are reasons we are all born sugar addicts, and given the reasons and the way civilisation is modernising forward then it is a trait that may eventualy drop from our genetic code, though that will still be a long way away due to the benifit it serves babies and small children who are still learning what and what they can and can not eat.