I'm going to jump in and agree with most people on this board: I'm also on the whole foods band wagon, and avoid artificial sweeteners. Maybe I'm crazy, but I swear my anxiety goes up when I consume them. I'm also leary of the long term affects, and it just makes sense that humans eat whole foods that our ancestors ate. That's what we're supposed to eat! AS to me belong in that "too good to be true" category. I have slowly weaned myself off putting sugar in my coffee (i use half and half and don't need sugar), don't put anything in my tea, and when I bake (rarely), I use good ole sugar. My friend made some chocolate chip cookies with Splenda the other day, and honestly, I thought they were awful! She's a great cook/baker, but the Splenda was just wrong, wrong, wrong. I wasted those calories on a cookie I didn't like, when I should have just used them on a treat I found really delicious and left satisfied. In general I'm against all the "fake food" movement: the fake butter, fake sweeteners, etc.
My one weakness? Diet Dr. Pepper. It's been tough but I've managed to basically cut it out of my diet completely (maybe once a month... in fact, I started drinking one yesterday, drank half and tossed it. Maybe it was mental but I swear I could sense its effects on me already).