Your experience on joining mirrors mine very closely. I had questions to which I wanted answers, and the answers they gave me (and the subsequent study of the Live Forever book) answered those perfectly. They did all fit together like a jigsaw puzzle, and I was very impressed with the internal cohesion of the Bible and how it seemed to unlock the Bible.
Some of this, I now realise, was because of the way the NWT has been translated to support pre-existing WTS doctrines. Other teachings now seem less cohesive after reading other books that highlight scriptures that directly contradict WTS teachings (WTS books downplay those inconsistencies or contradictions and because we want to believe, we do).
Only later did I see how much of the fundamental WTS teachings are based on a grab-bag of assumptions and chronological and historical inaccuracies (never acknowledged in WTS literature, so therefore a hurdle one never needs to face). Robert Crompton's "Counting the Days to Armageddon" is a very detailed analysis of the origin of WTS eschatology and is quite an eye-opener to how the WTS arrived at dates and beliefs that are now taken as truth and a basis of their beliefs.
- Why is that only Witnesses view Armageddon as God's impending war on the "world"? (It was Rutherford's conception, one cobbled together with an assortment of texts that created the patchwork he wanted).
- Why is that Witnesses believe God wants Christians to know his timetable for the "end times"? (Russell was convinced that, like the Da Vinci code, God had hidden such "truths" in the Bible for later discovery by a select few).
- Why is that Witnesses believe only they will be saved at Armageddon and that one must be associated with the WTS to survive (That was Rutherford's teaching).
- Why do Witnesses think it is so important to be different and limit their interaction with non-Witnesses (Rutherford and Knorr's teachings).
If the congregation has lost interest in you, I wouldn't bother disassociating. If there are some who maintain contact and you wish to send out a signal, then go ahead, but as already stated, they will then place a label on you and dismiss you as a loser, a victim of apostate teachings. Why give them that satisfaction?