The thing about plastic instruments; I'm a musician and have been for a very long time. Yes, I do think that you could be learning a real instrument. Rock Band and Guitar Hero can foster a love of music, but I don't believe for a second that you're a real musician because you go "click, click, click" on a plastic controller. The Rock Band games are fun. Music brings people together, and it's a chance for those without any musical ability to interact with music. Also with the music industry these days with the very narrow scope of radio, it may lead some to music that they have never thought of before, and it may very well inspire someone to some day say "you know, I'd like to do this for real". But like the song says, there ain't nothing like the real thing, baby!