Former KIA, KID, Pirc players
I used to play all of them. I like to play aggressive, even if it cost me a game, I'm not a fan of drawing, even in a simul with a GM. the KIA is just to slow, I'd rather go into the spanish torture, or the sicilian/caro-kann/french mainlines.
I used to play all three as well, however now I rarely play the Pirc and KID. I think that both of them are perfectly acceptable openings, but after using them exclusively in blitz matches, I decided to expand my horizons and begin studying lines in the Sicilian, French, Caro-Kann, and even the Scandinavian, although I will, on occasion, play the Pirc. For all current Pirc users, I recommend watching a game between Garry Kasparov and Veselin Topolav, 1999, and even though Black lost, I learned a lot about possible pawn formations on the queenside.
I still use the KIA on a regular basis, mainly because it can transpose into both aggressive and passive games, which can be a fun experience. Today, the KIA stands along with the Stonewall Attack, the King's Gambit, and the Ruy Lopez as a common opening I use for White.
Just curious. If you played the KIA, KID, or Pirc for a while and decided to move on, why did you move on? What (if anything) did you dislike about these openings? What did you move to?