My first computer RPG was Diablo. The original.
Before that, I only played the other types of games (Raptor: Call of the Shadow - PowerCollecting-Arcade-PlaneShooter; Doom - FirstPersonShooter; Stunt Island - FlightSimulator; Commander Keen; Duke Nukem; Bio Menace; Wolfenstein; Crystal Caves; Cosmoe's Cosmic Adventure; God of Thunder; etc).
The funny thing is, when I'm tired of all these modern RPGs, I just go reinstall Diablo and beat it a few times. <img src="/ubbthreads/images/graemlins/delight.gif" alt="" /> Its actually pathetically easy after beating Diablo II for a while.