GH should not be sold to anyone unless they can prove they have mid to high skill in real guitar first.
That was shows they have a good work ethic and ability to learn music before stretching out into the video game "fun" equivalent.
It's the same with flight sim, I'm glad I did those 1000 hours training in a harrier jump jet to be able to log onto a PC and play Flight Sim, flying a harrier.
Also, I'm glad I had to survive a real life zombie post apocalyptic end of world scenario with 3 others before getting Left 4 Dead. Those skills I learnt in real life really contributed to the playing experience and made me a better zombie slayer because of it.
Finally, if I hadn't been teamed up with a team of 9 multinational people, including; Big Fat Russians, Skinny Germans, steamlined fast running yanks and Black Scotsmen...I wouldn't have been able to capture the flag/control points as easy....and....
Some people just will not appreciate that playing games is serious business...