Have to concur with others regarding nostalgia being a part of it. Another big aspect, however, is ennui. The original Doom was engaging because it was someth

Have to concur with others regarding nostalgia being a part of it. Another big aspect, however, is ennui. The original Doom was engaging because it was something entirely new. After having played dozens of FPSes though, there's a tired sameness to all of them. "Oh boy, it's time to save the world again with your pistol / shotgun / assault rifle / sniper rifle / rocket launcher; how exciting" ... yeah, sorry, no. It really takes superlative execution for me to even consider buying another FPS these days and even then I'll wait for it to be in the bargain bin before buying it.