I had a child who drank just water. It was a doddle.
THen I had another one who, once bf stopped, would not touch the stuff. At all. Ever. And was cow's milk intolerant.
So, what was I supposed to give dc2? Believe me I tried. Every cup/sippy cup/bottle/drink apparatus ever made has passed through my house.
At first I could manage it with diet, but this was not sustainable longterm. And not drinking is a major health issue.
So it became a question of finding which drink was acceptable. Anything at all was fine with me, so long as fluids were going in.
Pure juice it was, for a while (pineapple, in case anyone is interested), and yes, I was bothered about dental health.
It took me 3 years to be able to water down the juice. Even now, aged 10, dc2 will only drink watered down juice (at least now it is seriously watered down - about 1:10). dc1 has followed suit (did so a long time ago, mostly by swiping his sibling's drink!). As yet, dc3 is still on water and being bf. But I hold out little hope that once he can swipe his siblings' drinks that he will stay drinking just water - why would he when the older ones are drinking stuff that is much more interesting?
FWIW, fizzy, fruit shoots, anything even remotely favoured by most children is not touched by my older 2. Just watered down grape juice or pineapple juice.
there are worse things in life.