The wind has gone out of the Watchtower sails. The org started on a spiritual high with the 'certainty' of God and Jesus conquering and ruling the earth by 1914. It was a load of rubbish-- but who has benefitted? I will remind you; the business organisation which resulted from peddling this utopia now known as JW org.
I even read this WT hype in the local library from a provincial UK newspaper of around 1880. It declared cheerfully that sickness and death was soon coming to an end obviously based on Russell's sermons emanating from USA at the time. So Doubtful1799, Russell seemed to have be influential in getting his message across but his successors have left more of an ill defined one.
People who are struggling to cope with the common hardships of life are more likely to respond to this hope beyond hope. They are the shallow thinkers who put hope above reality and dreams above fact. Most of JWs are in this cocoon and the thought of letting go of their precious vision of paradise is emotionally devastating. Therefore the denial of anything which would destabilise their precarious niche in the world. Their faith is in the bringers of this dream: the governing body of Jehovah's Witnesses. The humble JW has been instilled with the notion that faithfulness to God equals obedience to the GB.
Times have changed, no longer do JWs need to research, it is just a matter of remaining obedient to their leaders and this alone gives the Witness the sense of emotional security they crave.
There are in the Western World few new JW converts so what seems to have happened is the shift towards the quest to retain born-ins, no longer is deep Bible knowledge important or stressed (the leaders after all are forever changing their minds on what bits of the Bible mean) no need to make a defence of belief or arguing your case especially as your case for being there is not clear even to the JW!
The evangelical fire has gone from the organisation, which is not surprising since the JW promises never have any semblance of truth in them. Now it's more a matter of the self satisfaction of letting others see you at the cart and hope some of them might join you.