You do not need to drink water. It is a craze based on the general idea that pure and simple is best, but if you do not like it, do not drink it. Unsweetened iced tea is actually better than water in many ways because tea is very healthful.

The only undeniably good thing about pure water is that it does not stain tooth enamel, unlike coffee and tea. If you want white teeth, then yes, it makes sense to try to learn to like water. How about Smart Water? It is much tastier than regular water - by a very large margin.

Here is how I solve the tooth staining issue:

I buy a big basket of strawberries, cut them up and freeze.
Then I steep a bag of this green tea Kirkland Signature Green Tea, Sencha & Matcha Blend, 100 bags for literally less than a minute, just to barely color the boiling water , and discard.

Then I add several slivers of frozen strawberries - and for myself, as I need a sweetener for tea, but you may not need it, stevia. Stevia is safe - you can look it up on the website of FDA.

So it is a pleasant tasting, pleasant smelling drink, but unlike black tea, the color is ever so slight, and I do not think it would stain my tooth enamel as bad as tea or coffee.

Do note that if you like iced coffee, it is good for you on many levels - say, coffee protects against diabetes and Parkinson's (for me it is super important since I have genetic predisposition to both). Very bad for tooth enamel, but good for other reasons.

So your habits are not as nearly as bad as they might seem.