I've had long discussions with a now inactive Witness who has endured a nearly intolerable level of scrutiny. Why? His hall is short of eligible brothers. The elders need someone to assign the crap work to.
He is convinced it is all power games. If a DF'd brother is begging to be reinstated, they will ignore him and leave him dangling as long as they dare. On the other hand, if they sniff out that the brother doesn't care any more, they are all over him.
It still blows me away that leadership takes resignations under advisement - as if permission must be granted to quit - and that the assignments keep on rolling in until the brother has the audacity to refuse.