Ally, I used to drink about 10 cups a day! Then I had a big "system purge" and no caffine for 6 weeks, then I was back to 3-4 cups shortly after that.

I'm probably going to have about 5 cups of decaff today and tomorrow, I just don't have a coffee when I'm not at home so that is what cuts me down to 2-3 cups on a "normal" work day. Plus, if you have really strong coffees that's different to having weak ones - some people I know like 3 spoons of coffee in a drink, I like only one.