I like a little of both, preferring tea over the other, especially without sugar and cream/milk. Coffee, I can't drink that black :\ I always put a ton of cream and sugar into it and then ice it down on hot days. Leaves me breath smelling awful, so I don't have it often.
I've got a tea-phobia, can't see it anymore. That's cause I'm working at a retirement-home, got to make so much tea for old people.
But I love coffee. any coffee. Makes me stay awake. sleep is a waste of time.
The thing a lot of people don't realize when trying the opposite drink than is normal in their area (trying tea over here in America, or coffee over in Europe) is that there's a HUGE difference between GOOD coffee/tea, and BAD coffee/tea. And how you brew it makes even more difference.
I've had really good coffee, really bad coffee, really good tea, and really bad tea. For myself, I can say this:
Starbucks makes strong coffee, with good flavor, but they brew it too hot. Not good coffee.
Dunkin donuts is a bit better, less bitter, but still too hot when brewed.
Cold brewed coffee is heaven. Smooth like nothing else, and it gets all the flavor, but it takes a while to make, and is expensive if actually bought in a store. Make it yourself overnight outside in a pitcher with a lot of grounds in a filter paper, and see what I mean. It's weaker, but if you use enough it turns out awesome.
Even coffee from your machine can be good, once you find the right amount for your machine and brand (too little/too much and it burns, just right and it's not bitter. at all).
Tea is a bit tougher, in America. Lipton = crap. Big time. Maybe it's different over in Europe, but here all you get is cheapo Lipton crud. Good tea is really really good though, and almost beats coffee for me. It's hard to find here tho, and expensive.
Personally, tea feels to me more like a sipping sort of thing, to slowly enjoy and have mild flavors. Coffee is a wake-up juice, and as long as you don't have the bitterness (easily possible, even with Folgers, if you figure out the right way to do it) I think it tastes even better than tea.
And I see I've talked about this too much I'm a caffienated geek tho, and I KNOW how to make good coffee, so I'll stick with that.