There are several comments to the effect that the WTBTS's hatred comes from the weakness of their own belief set. That is to say, they cannot present a watertight case for certain of their beliefs. So they take the easy option and make an outright adverse judgement of those who have left. I left some years ago, after a period of 'inactivity', because I found clear scriptural evidence for alternative and coherent doctrines. So although I left the WTBTS I most emphatically did *not* leave Yahweh.
It was reported to me that a lady in the local congregation had asked "Does he believe in evolution ?" This illustrates the mindset - "We cannot possibly be wrong, whatever next !!! Somehow it is *his* fault." Just for the record - No, I do not believe in evolution ! And yes, those who were a part of the WTBTS are indeed in the best position to present the real truth of the Bible's teachings, knowing the inside workings.
But here we have a sad scenario, as many who have left appear to have become embittered against any spiritual frame of mind, some even appear to have rejected God himself. But please be aware that the pain has not been caused by God, but by an organisation that is overly generous with self serving expressions, expressions of self-aggrandisement. Please do not abandon God on account of human wickedness.