If look at the wiki like a previous poster stated, you can see that there hasn't really been a lack of large wars. We finished up the Karma War in July. There was about a year long gap between the Unjust and the War of the Coalition if I remember correctly. There's always the smattering of beat downs between the big conflicts which, setting aside half baked arguments, we just experienced recently. If you are in the right place at the right time, you could always get involved in one of those wars. If I had to guess, we are due for another big war this summer at the latest. Someone will have entirely too much time on their hands and may start some !@#$ before then I reckon.
Anyway, I'll agree that the forums and alliances in general have become less "aggressive" over the past year or so. My theory on that is most of the outright warmongers have either left the game or have realized that playing it out smarter over a longer period of time, eventually culminating in a short burst of focused violence, would achieve their aims more effectively. That and a majority of the influential CN players have just older. They've been playing 2 to 4 years. When you get older you have to budget your time and deal a lot more with that pesky RL. Warmongering everyday isn't practical for some people anymore.