When someone appeals a JC decision they may still believe that a loving, compassionate Jehovah oversees the whole process, will read their hearts and make matters right. The reality is that the whole judicial process is an implementation of man-made rules by company men.
These men have egos. An appeal is an affront to their authority and skill level. An overturned judicial decision is an embarrassment not quickly lived down. Even if an appeal committee sympathizes with the accused, the reality of having to work with their cronies on a variety of levels will far outweigh their collective consciences.
The original committee frequently drags their feet considering reinstatement of someone who has dared to appeal(question) their judgement. Some are even arrogant enough to use the threat of a longer disfellowshipment to dissuade someone from appealing.
As much as it hurts initially to be disfellowshipped, when someone realizes that this is simply the hierarchy of a man-made cult passing judgement, the freedom and healing begins.
tms