I don't understand the classic Trinity teaching too well either. It does seem to explain some scriptures but not others. But, I've decided that religion must have some mystical elements to it, and as long as it isn't socially or psychologically damaging, it's okay not to understand everything.
To my mind, religion is mostly about metaphor anyway. I don't take much of anything about it literally these days.
But, I never really could see the 1914 doctrine, the 144,000 being the only "born again" Christians and the "God will only save JWs" doctrince and never did, and those are pivotal to being a JW. I always had these and other doctrinal differences with some of the WTS but was too intimidated, being a "mere woman" to try to debate it.
I went through a "chuck it all" phase for anything religious for a few years, but I seem to have some spiritual and social needs and can't ignore t hem.
I just don't want to be part of high control, evangelistic, or fundamentalist religions anymore. Had enuf of that.