(: basically it's cuz there is no dedicated irc channel for vCTF afaik. Warfare is a different story. Ppl like cr4zyb4st4rd, Euxeus, demoniac or Pemphigus seems to hang out there 24/7 so it's easier for them to get a game together. Usually it's 2 or 4 matches tops then it falls apart, but it's worth the wait.
i know they spend there half life, and agreed, it's worth waiting.
but they usually play there cuz warfare oublic servers are really really noobish...
vctf is the same most of the times. it's a matter of making irc public and maybe people would join...