If you were allowed to grant yourself one ammunity that you could have done that abided by the rules what would be your ammunity?
First, I am having a very hard time understanding just exactly what you're asking here. How does one "do" an immunity? And how could one "do" an immunity that abided by the rules of the religion? Are you asking for JW "rules" that I would have chosen to be immune from? If so, how can that immunity abide by the rules? A little confusing.
So, if that could be clarified I think I could provide a better answer.
Though I do get the feeling, as others apparently do, that you are of the opinion that people who leave just don't like the rules, or think they're too hard to follow. This would be a mischaracterization generally, though I'm sure there are exceptions.
Self-discipline is a requirement for any person in developing their character. I have no problem with rules. But when those rules are used to the detriment of the individual, of familes, of the hearts and souls of those who are to be held to them, I have a problem with them. There are good rules and bad rules. Many, many of the doctrinal rules of the WBTS are very detrimental to the psychological well-being of its constituents.
"The name of sin is restriction." When a person is so tightly bound by "rules" which are unnatural, which so many of the WBTS' rules are, they tend to develop into very nasty psychoses, neuroses, etc. which often then explode in very unbalanced ways. And when these rules (laws) are held to in such a draconian fashion, with little regard to specifics and nuances of a case, they cannot be held to fairly.
The human soul, very naturally, desires to be free. Self-discipline should be developed and used to guide the natural power we each have, as "Children of God" if you will, towards noble goals and causes. But when any bureaucracy, which assuredly the WBTS has become, reaches a certain point, the human soul will tend to revolt. This is the way God, Jehovah, made us, and is not due to any other influence.