I was pretty heavily into Q3A, played in a clan and Championships etc, even ran a few servers. In my heyday I used to be pretty hot, went entire nights without losing a single game. I made it several times "unofficial" world number one in "instagib" mod. (Amateur level of course)
If I go online now, I get my ass kicked like I had never played the game before. Of course I've lost my punch, but it seems that the few people who still play the game now are the real hard-core who have been refining their skills for the last 10 years without break. They've probably half grown into the game and have a little digital existence on the quake servers. Scary!