...wonder if I have done my family a great disservice by taking this away from them.
Seriously? A disservice? You've saved them from indoctrination into a cult. You probably saved them from later personality issues once they realize they're in a cult, and try to escape. You may have even saved their lives, should the blood issue ever arise down the road (hopefully not, but do you want to really face that crisis as an open eyed JW?)
Remember, the 'brotherhood' you were part of was based on everyone in the collective obeying the leadership. Remember how you looked down on 'weak' ones? Remember how you strived, but were never quite good enough, to be the perfect Christian family, spouse, publisher? It was all by design.
Once your eyes were open, and you saw the reality of being in this organzation, you were nothing to them. The leadership cuts loose those they can't control. You're 'friends' ... your 'brotherhood', obeying the leadership, cast you aside. They cast you aside as so much refuse being flung from a car window at 80mph. They don't care about you. They care more about obeying than they do people, just as they've been indoctrinated.
Be thankful that you saved your family from that life of servitude to a religious cult.