I wish they'd introduce a non-Caffeine version of Coca-Cola but not Diet. Even Pepsi has their caffeine free cans in Canada (bottles in the US).
This is just a cost saving measure. Cola drinks are in decline, and they're losing tons of marketshare. That's why they bring out these new 222 ml fun size cans which actually cost more per size than regular can, but people like buying because they're getting less calories. They dropped real sugar because it was easier to put hfcs/glucose-fructose, now they want to cut that down even more to nickel and dime a few more savings.
I used to drink a ridiculous amount of Cola. I could probably still do a blind taste test of like 12 brands, diets, flavors, and tell you what what. But it's been 5+ years since I've had more than maybe a can or two every 6 months. I just know if I'm not careful, I could chug a 2 litre within minutes.