Some people (like Ted Lasso) just don't like tea; both of these options are maybe not great for your teeth, but they're surprisingly delicious.
Lemon & Hot Water
I've seen this in movies and thought of it as a sort of lame alternative for people who don't want to indulge in sugary or boozy treats, but it's actually surprisingly delicious! Don't drink it every day and/or be sure to rinse your teeth with water afterwards so that the acidity doesn't wear out your enamel. (See also: Dental fluoride)
Apple Cider Vinegar, Honey, & Hot Water
This one is also excellent to sip on when you're under the weather. And maybe apple cider vinegar is good for you?
Update: it turns out that just drinking water at tea temperature (135F) is surprisingly comforting. I got started via my exploration of Congee (and related Chinese medicine/energetics), but a bunch of people in my life have started requesting and drinking tea-temperature water. And we generally drink it a bit more like a regular glass of water rather than sipping/savoring, which makes it a very belly-warming option.