Maybe you remember when you started playing go. If you played with strong kyu players (not even dans) you could get all your stones captured. I managed to win a 17 stones handicap game by 80 points as white. It's ok to try it for fun once (we did that for fun) but it's not fun anymore on the second time. I went on explaining all the most common mistakes in that game.

The point is that a game with such a gap as go is fun of you have a ladder of increasingly stronger opponents to play with. 20 kyu, 18 kyu, 16 kyu, etc. If the AI is a dan player, whatever it means in Quake, the gap is probably too wide for many people, especially since games started to be easy to win to retain players.