...initiated by the wife, in many cases, because it's come to her attention that she is married to a jerk and she has to find a way out.
True enough.
I find it amazing how many people seem to feel an urge to protest the statement that the husband is often the injured party in a divorce.
Somehow we always try to find it a way to make it his fault. If he files, it's because he's an asshole and dumping her for a trophy bimbo. If she files, it's because he drove her to it.
Apparently, it is not possible for him to file because she drove him to it.