Actually I believe that the reason coffee and tea are considered strong drink is because they contain a substance called tanic acid. That is the reason; not the fact that they have caffiene. So even decaf would be against the W.o.W. However, the most improtant part of the word of wisdom is not the things it says to eat or not eat, it is all summed up in verse 18: "All saints who remeber to keep and do these sayings, 'Walking In Obedience To The Commandments', shall receive health in their navel and marrow to their bones." So in other words it doesn't do anyone a bit of good if they don't also live God's commandments.