Since you've brought up the subject of caffeine, I'll mention that I get mine from Pepsi, which is the first liquid down my throat virtually every day...close to 2 liters/day these days, but 24 cans/day at one point in my life.
I'm addicted to Pepsi's texture, its acidity/bite, not its caffeine; I can make do without it, when necessary, with no cravings or other ill-effects, but no beverage is as satisfying to me as is Pepsi. (Nope... It hasn't rotted either my teeth or stomach.)
I tasted iced coffee 2 or 3 times, 50-55 years ago, but hot coffee has never passed my lips; coffee flavored CHARMS, on the other hand, were great. (I don't recall ever trying tea, hot or iced.)
