Unfortunately, I've always been an avid soda drinker.  I am extremely addicted to caffeine.  If I go for an extended amount of time without it, I get a horrible headache.  Drinking 12 cans of soda a day is NOT healthy and has led to excess weight gain.  Then I discovered coke  zero.  It tastes more like regular coke than any other diet brand i've found.  And it doesn't have an aftertaste.  I only like it ice cold, though.  And two liters go flat way too fast.  Switching to this product has saved me thousands of calories.