Drink for flavour not effect
Every day someone apologizes to me prior to softly ordering decaf, they approach cautiously, waiting for a moment when the coast is relatively clear, bracing themselves for the obligatory bagging or under breath mutter from their barista, about why they shouldn't bother ordering a coffee.
They are probably surprised by the acceptance of the order in a coffee specialist house.
I believe if your product is fresh, and well made it will rival a vast number of coffees being served out there in cafe land.
So I'm likely cop flack from the supposed purist coffee aficionados, for supporting "sex on the beach" style coffees, there...... "something".........near water...but I feel that if the decaf is chosen well, roasted with care and prepared as a beverage when it is fresh, it will scratch an itch that cannot be satisfied by any other beverage.
In pregnancy our decaf has been godsend to many of our regulars, even my wife, enjoyed decaf for several months. Admittedly I had stamped as a regular roast.
I've many customers with heart conditions that have been serious coffee drinkers, when told to cut down their caffeine content, I've snuck them a decaf micky, when they were adamant that they would never drink decaf. After letting them know what I had done, they've happily made the switch.
Don't be silly enough to expect to get any great coffee from anyone who dismisses the way you like it it.
Now Chai........ Thats another matter! ;)

