Gaslit Again

Recently someone at work was going through some Coke Zero which I think has been around for years but maybe just recently had a formula and/or can design change.  I don't drink soft drinks for the most part and rarely ever a "diet" soda because I think they taste icky.  I prefer zero calorie seltzer water — water with bubbles.  I did drink too much Coca-Cola back when I was young.  Anyway, this person tells me it tastes like regular Coke.  Um, actually 1)  It doesn't and  2) it is not only zero calories and tastes like artificial sweetener tastes it's also zero caffeine.  Why bother?