I never drank caffeine until college, got hooked on it for the last 5 years or so, just stopped using it last week. I feel great now. If you don't drink coffee for pleasure and only for the caffeine it's worth trying life without it.
In fact, sitting my back yard and sipping a nice, warm cup of coffee is just about one of my favorites Saturday rituals, and I have no plans to be productive that day. Coffee is just... pleasant!