I used to drink diet soda all of the time and then ran out one long weekend about 3 or 4 years ago and just kind of stopped drinking it. No real reason other than laziness (not wanting to buy and carry in the case from the store). I occasionally drink flavored sletzer (no sweeteners in it, just essence or whatever) but don't really enjoy soda anymore. I was never a big regular soda drinker, so the diet stuff wasn't to replace anything and I don't recall there being a significant change in my appetite when I stopped.
First 10% goal (180): MET 2/1/14!!!
Next 10% goal (162):
Next & final 10% goal (145):