Surely we all know that disfellowshipping is a very subjective process. Each case is handled in accordance with the whims of the elders involved. A former poster on this board called Cygnus (if I recall correctly) was inactive. He had lunch with a DF'd person, and the elders basically hunted him down to disfellowship him for having lunch with somebody he knew as a friend.
Just for the sake of argument, let's say that people who are disfellowshipped actually are DF'd for conduct or behavior that is reprehensible. They may have chosen the behavior, but they did not choose to be shunned and treated worse than the criminals on Death Row. They did not choose to lose their parents, siblings and extended family.
It's a crap shoot, plain and simple. The DF'd ones pay a terrible price for getting on the wrong side of the men in power.
Absolute power corrupts absolutely.