I really wonder that, since everyone and their mothers seem to know how to play guitar. Then again, one of the "in" things to do is to use that piece of black plastic that automatically changes the key of the guitar...Effortless...
crying Then again, everyone plays the clarinet at some point too, right? =P
At least with guitar you wouldn't have to worry about breath control or embouchure, but there's fingerings, chords, etc. to memorize, and reading tabs.
But I honestly have no idea as far as the easiness goes. Although one of the trumpet players wants me to learn guitar for some reason...