I see green tea touted for its health benefits all the time, and many people here seem to swear by it. I love drinking green tea, but I also like other teas. Is there any reason not to drink black teas, oolong teas, white teas, etc? I'm a bit of a tea freak (I have over 20 different types of tea in my kitchen), so I don't like the idea of limiting myself to green tea. Does it really make that much of a difference, or am I worrying about the minutia? Thanks.