I've never finished a single RPG besides Chrono Cross (and Pokemons Blue and Gold if those even really count). What's sad is that I really enjoy most of the Final Fantasies I have, but for some reason I always reach a point where I get bored and tell myself "eh, just play another game for a few days, then come back to this," but then I just never regain the willpower to pick up where I left off. But these days I don't even bother with RPGs at all because I know I don't have the time.
Actually, Chrono Cross is the only Playstation RPG I've ever even gotten to disc 2 on.
Edit: oh, I usually finish Zelda games, though, if those count as RPGs.