What the hell does that have to do with everything? Are your comprehension abilities that bad?
People don't play games to do something illegal or non existent, they play them to enjoy themselves.
Besides that, playing guitar and playing guitar hero are completely different. It's not as easy to just pick up a guitar and play some music, you gotta learn it first, and many don't find that enjoyable, which is what video games are all about.
It's like me saying instead of playing the game
Free Running, go outside and do some parkour. First of all, not many have the physical ability to do so, and not many find that enjoyable, yet they can simulate it using the video game, which perhaps is more enjoyable to that certain individual.
Again, your argument is complete horse stuff.