I've never had a "sweet tooth", but refined sugar is such a small part of my diet anymore that eating a donut or more than a couple of bites of cake almost makes me sick thinking about it. Just kind of that "I know what's going to happen and I don't like it" feeling. It makes it quite easy (for me) to walk away. Now if only I could apply that psychology to a few other foods....
A little bit of good chocolate is far more satisfying than a lot of some cheap-o Hershey bar or such. There's more flavor, a better mouthfeel. Good chocolate is not inexpensive, but in the long run, it probably isn't more expensive than buying more of the cheap stuff.