I used to drink a lot of tea.
my little brother is like you. he wont go near coffee.
My grandmother, when she came to visit from Alabama, always had a batch brewing in the morning. It smelled so good and if you put creamer in it, it tastes pretty good. But if I drink it, it feels like I've had a neurological episode and it takes hours to get it out of my system.
The weird thing is that tea has more caffeine than coffee, but it doesn't bother me at all.