I think there'd have to be a serious health negative to maintaining my coffee addiction before I feel it'd be worth skipping my morning latte.
Oh, and a sugar hit can have a very similar effect in my opinion.
Really surprised me when I found out, too. (when someone told me I'd been drinking decaf for the past few days)
Not a health negative but you build a tolerance to it. So then when you actually "need" a caffeine boost you'll need more of it. So...you'll have to buy a bigger mug and deal with more sever headaches if you somehow go without it.
I am actually doing what the article suggests. I normally don't drink coffee (I drink tea) except when I need a boost, then wean myself off of it. Then I do get the headaches and I manage them buy drinking more tea than usual and taking aspirin.
You switch out the first benefit for tea, I switch out the second for usually either sugar or exercise.