Its cult life.
Everything is wrapped up in their biblical Armageddon and their WT designed new order.
They didn't invest in this life, whether it be career, hobbies or education.
They boarded the WT train, and most are going to ride it wherever it takes them. That train takes them to the grave eventually, but the scenery they enjoy along the way is filled with windowless kingdom halls, or empty neighborhoods as they drive around the territory in their four door cars. Every once and a while something really bad in the world happens, and they think the train is finally pulling into the station...but it keeps chugging along to nowhere.
This too, shall pass.