It was also humiliating to fall on my face trying to even pass a stage with an Iron Maiden song I must have listened to hundreds of times in the past 25 years or so. To my relief there were other songs that I nailed cold (Strutter, YYZ), so I think I paid for that transgression in spades.
For some reason I got tired of playing it, and I was never attracted to the games that came out since, or the Rock Band franchise. Friends played both franchises and mostly liked them all.
Here's a fantastic timeline on the 19 versions of the Guitar Hero series that spawned over just five years:
R.I.P. Guitar Hero, but I honestly will not miss you. (Timeline) : gaming