I wonder if that's the real reason he wanted the US to start a war in Iraq: to alleviate the boredom of modern life.
That's probably Special Circumstances in the Culture novels, but those novels are just a mashup of Iain Banks's imagination and biases, and I think they're poor approximation of anything resembling reality under any set of conditions.
Personally, I think your theory would be a fun conversation topic, but I doubt it reflects real life.