Yeah, but it tastes like cr*p!
I like diet coke with lime. tasty.
Squeeze in some lemon and it isn't too bad.
That's what I used to think, until the office where I worked had a fridge stocked with free Diet Cokes. I started drinking it because it was free, but thought it had a terrible aftertaste. But you just have to drink it for a while and you don't notice it. Now it's all I drink.
Go get a case and drink one every day for a week or two, and soon you won't be able to tell the difference between diet and regular.
Taste is an acquired thing. I've been drinking Diet Coke most of my adult life, and on those rare occasions that I try a regular Coke, it tastes overly sweet to me. I usually end up drinking only half of it and then dumping the rest down the sink.