I agree with Blackcatbone. If they'd polled me when I was working full time, going to school full time, raising 3 teenagers, and had a husband who was gone more than he was home, I'd have ranked as definitely unhappy. In my case, though, my husband was military special ops, and being gone wasn't a "choice" (except for his choice to do the job, and my choice to marry him).
Now that he's retired from the military and the kids are grown and on their own, I'm very happy--and I have a husband who appreciates what I did for the family all those years, and pulls his own weight around the house.
Men still make more money than women with the same education and experience. That's got to add to the "unhappy" measure.