Bad press

Coffee often gets bad press, personally I think this is because it gets abused like other foods and drinks. I mainly have one coffee with breakfast to wake up and then one at lunch to avoid the post lunch slump.
Some people drink it all day and wonder why they then sleep badly. Some people swear that drinking a coffee before going to bed doesn't affect them. One person I know who prescribed to this philosophy did kick the habit for while and found that the quality of her sleep was much improved.

Caffeine

It is not surprising that your sleep can be disturbed by a late night coffee as caffeine stays in your system for about 7 hours. Though it has been found that people metabolise caffeine differently, in fact, some people have a mutated gene which doesn't allow them to process caffeine. If you're average, the last coffee should be in the afternoon around 3pm-4pm, helpful to push through the afternoon slump.
People with high blood pressure or pregnant women are usually advised to stay off caffeine. But if you're like me and like the flavour of coffee even without the caffeine, a freshly roasted decaf is a fabulous alternative.

Decaf

There are 3 main ways to decaffeinate coffee: chemicals, water and Co2. If your coffee is organic, then it will not have been processed with solvent chemicals. The Swiss water process washes out a lot of flavour. The Co2 (carbon dioxide) the stuff you breath out, is used to process the coffee that we sell.
Many of you that have had decaf may argue that it is tasteless and pointless. It can be. Any processing that normally takes out 95% caffeine will take out some flavour. To compensate for the loss of flavour it is critically important to have decaf freshly roasted - i.e within 3 weeks plus, use an extra tablespoon of coffee when you make it. Most people that I have served fresh-roasted decaf to, made in this way, have not even notice it's decaf.

Antioxidants and other benefits

Coffee is number one source of antioxidants Joe Vinson PHD

'Coffee came out on top, on the combined basis of both antioxidants per serving size and frequency of consumption, Vinson says. Java easily outranked such popular antioxidant sources as tea, milk, chocolate and cranberries, he says. Of all the foods and beverages studied, dates actually have the most antioxidants of all based solely on serving size, according to Vinson. But since dates are not consumed at anywhere near the level of coffee, the blue ribbon goes to our favorite morning pick-me-up as the number one source of antioxidants, he says.

Besides keeping you alert and awake, coffee has been linked to an increasing number of potential health benefits, including protection against liver and colon cancer, type 2 diabetes, and Parkinson's disease, according to some recently published studies.'