I quit coffee the last time I got sick with the flu. I figured If I'm going to feel crap I might as well commit to it.

after that I only drink Tea (black no sugar) and only about 3-4 a day. I can go a full day without any tea much easier than i could with no coffee... but I might just quit all caffeine completely anyway. we'll see, I need to find decent "hot drinks" that are low acidity and no milk. Mint Tea (no black tea in it) will only go so far.