I always drank instant, then switched to brewed for a few years and then went back to instant...I started having these heavy duty vertigo attacks...switching back to instant and cutting way down on coffee in general helped a lot. Now I just have a cup of instant in the morning and one after supper.
I drink about 6 to 8 cups of coffee per day, dark roast preferred.
A few months back, I cup out the 1 teaspoon of sugar, and then the few drops of creamer.
So... coffee.. black... all day... every day.
If at home, I will drink water (we are on a well) or fruit juice (if available).
If out and coffee is not available, then iced tea (sweet or not... just prefer my tea cold).
But... since starting work in the mid-80's, coffee has been and will continue to be my beverage of choice.
Caffeine is a drug. It's a stimulant no different the cocaine or heroine. Most people are also addicted to it, and like most addicts they think they aren't and can quit any time. Yet they never do, and always feel better when they get their fix. The only difference is one is socially acceptable because its effects aren't quite as bad as the harder drugs.