There are a lot more women than men in the JW's. Back in the day, when women stayed home, they were more likely to be at home when a dub knocked on the door. Women are more likely to be unhappy with the way the world works, too. Men call most of the shots.
So, all of that created a female-dominated religion (although I believe most religions are female-dominated) wherein women were relegated to second-class status while their male counterparts (who spent less time in the preaching activity usually) rose in the ranks and got to feel even more superior than they did already. Meanwhile, staying single was encouraged, but not rewarded.
As an ex-wife of an elder, I can say that JW marriage is less than rewarding.
But being an elder's wife gets one some "respect" from members of the congregation, who wouldn't give you the time of day otherwise.