I forgot to mention, but one reason I switch off on the kind of tea I consume is that I find my taste buds get "tired"...teas taste best when you change them up-
probably since they aren't a strong flavor to begin with. (Just like with fragrances, be they good or bad, our sense of smell starts to tune them out after a while.)
I don't like anything added to my tea either...not lemon, cream/milk, or sugar.