(1) The members are indoctrinated to believe "there is nothing out there" so that being "cast out" or leaving is being in the "outer darkness" The person who finds themselves , shunned, an "outsider" is devastated, frightened, feeling hopeless. Terrified.
(2) The reality is , there is NOTHING in the WT, not "truth" not "special knowledge" not "original doctrines" It is a spiritual wasteland, devoid of Holy Spirit, NOT the "conduit for Jehovah's Spirit", it is a cold, empty, miserable place spiritually. The "sense" of belonging comes from not belonging to or being connected to the community around you, your neighbors, so in isolation you mistake a desert Island for a refuge, when in actuality, when you look up there is a bridge to the place God really dwells , which is in the hearts and minds of billions of people.
(3) Unqualified, uneducated, males, of usually low intelligence and limited reasoning ability, are elevated to positions way above their abilities and given powers they would never be given in society outside the KH, because their lack of qualifications would be identified.
(4) The WT is a refuge for many men who have failed in the outside world, they are the powerless, the unskilled, the poor, and in the congregation they get to have " a place in the sun" They dress up in suits and ties ( not thier work clothes thats for sure) and assume important sounding titles and strut around like dictators in a banana republic, throwing fear into the hearts of women and children.
(5) Sometimes they band together in nepotistic businesses, like the Sikhs and the Mormons and they ban together to accumulate wealth for their families. But never do the WT men set up charities, or do social services with their money, they live large and hoard their money and show it off with big cars, big houses, drinking, and spending on themselves and on whatever makes them look more important. This behavior, in itself, shows who and what they really are. So to be disfellowshipped is actuallt the best thing that will ever happen to you and if your own family shuns you, they weren't your family, they were caretakers for that part of your life.