How Is diet soda better than regular soda?

Normal coke contains large amounts of sugar. Diet Coke does not. These are facts.

Another opinion
Diet Coke has 0 calories because it is sweetened not by sugar but by Aspartame, an artificial sweetener. In my opinion you should try to limit the intake of either, but I tend to think the regular Coke is a better option in the long run as long as you don't overdo it and keep a healthy lifestyle. Aspartame is a new thing created in a lab. We think we know a whole lot about it but we still have a hard time figuring out why certain diseases are growing so rapidly and I'd rather not be a guinea pig for a product big business created to give people "peace of mind."
Another opinionOne has chemicals that are potentially harmful (in multiple ways, not just carcinogenic). The other has a lot of sugar, and most people get far too much sugar anyway. My advice is to drink water. Need carbonation? Drink seltzer water. Need caffeine? Coffee.

Another opinion

Diet coke is awesome