Hello, Spooky. I drink San Pellegrino for all the natural minerals and electrolytes and because it is zero sugar. I don't drink it exclusively; I drink water, tea, soups, but at least once a day, especially in hot weather, I'll have a big glass of San Pellegrino with a wedge of lime. At Costco you can get a case of 12 glass bottles, each bottle 750 ml, for $15, and sometimes a deal with a $4 discount coupon.
I also sprinkle a bit of sea salt (Costco!) on my food.