Harmonix! I was an early adopter of the FIRST Guitar Hero, and i loved this new music and synchronicity I was feeling. During GH2, my Dad said "Why don't you try the real thing?" and so I did.

Granted, the goal of getting in a GH or Rock Band of my own is now perma-dashed, but if that was the only reason to make music, I wouldn't still be doing it 15+ years later.