I still think it's cause you all don't know how to play it. How many other Atari games can you carry items that regen your health when you need it, or that you can warp from room to room ?
When I play, I never have the whole "fall back into the pit" issue people talk about, cause I know, exit the bottom. I also never hit bottom of a pit, because you can catch yourself. I know the goal of it, and can generally beat it in 5 mins. If you don't know what the icons on the top mean, then you're not playing the game correctly. It was also one of a handful of games you could beat at the time. Having a game end cause you finished it was awesome.
Now most people who call it bad say that because they have no idea what to do in it. But compare it to say Riddle of the Spynx, where you have to use both joysticks to play. Try figuring this game out on your own and beating it. Or star master, great game, but watch the Angry Video Game Nerd play it on his Mondays shows. They play it completely wrong, cause they're using the joysticks, not knowing you need to flip switches on the console to get the radar screen to show up, to warp to the enemies.
And someone said Realsports. Real sports baseball, every pitch looks exactly the same, so you have no idea if you can hit a pitch or not. Heck, the games so bad, the computer can't even throw to it's own first baseman. And the Soccer one, they forgot the goalie. Kinda need him.