I like fizzy drinks but I stopped doing "pop" when the sugar tax came in because it all became various chemical cocktails with fizz. Some of those chemicals can be dangerous, so not for me.
Instead of 'pop' I initially went for sparkling spring water, but goodness it is expensive! Even 'own brands' of unknown source (pun) are about 70p/ltr so I got a SodaStream.
I use tap water because it is 99% pure and once carbonated I get more than 60ltr for about 21p/ltr. Leeds tap water came third in the last nationwide taste test, and Yorkshire Water do not add fluoride, so I am lucky.
I mix it with pure fruit juices, My favourites are pink grapefruit, cherry, and grenadine. Just saying.