I have had a number of friends ask me to teach them....I show them a G and a D and tell them to bounce back and forth between the the two "like this" and they try it and say "F this!! it is way to hard!!!!" when people actually try and play chords they figure out really quick how much learning and repititious practice it takes.
"Dammit Jim!! I'm a guitarist not a roadie...so haul my gear"