Diet coke is available here in The Netherlands since a couple of years. About a year ago, Coca Cola changed their recipe for Diet coke and made the taste of Diet coke better.
It is not “chemical” anymore, what you are drinking now. Though I am not on a diet, I switched, while there is no sugar in the cola, and in fact I am liking the side effect of diet coke, you feel less thirsty after drinking Diet coke, compared with normal cola. With the normal cola, the thirst feeling stays longer, and in my opinion, I was drinking more. The costs are almost the same, so my choice is easily made.