If we want an argument about Sith, it's pretty easy. They take the easy way to power. Wonton destruction is a lot easier than self-restraint. We could also assume that Sith spend time honing their saber skills instead of learning the finer points of inter-stellar diplomacy.

But, seriously. Bad Guys (tm) have to be intimidating. I wasn't trying to be a jerk about it. Punctuation and NM posts tend to get interpreted that way, though.