Interesting thread, thanks for posting. I'm an offspring of " idiots " actually. I was born into the JW's also. Got out 13 years ago at age 44. Although my parents did well providing materially for the family- my dad was a legend in his own mind for years- very well known elder who reveled in being looked at in our town as the " Big Kahuna " .
I feel that the WT uses flattery and love bombing to turn people's minds off to the doubts screaming inside. Then once a person like my dad gets " used " by the WT Society which is considered " progressing in position " in the JW organization it goes to their head and through 60 years of being in the cult he got SO invested he believed all the false promises and delusions, plus his ego was stroked turning off his mind to reality.
I think the WT Society appeals to people who are lacking self esteem or lacking any real fulfilling accomplishments in their lives , also the JW organization actually LOOKS for people who are insecure or searching for comfort in their lives. ANY kind of comfort. Even the " illusionary paradise " which will make them forget loss of loved ones in death, going through a divorce, a broken family- anybody who is needy is very susceptible to being drawn in by a cult.
I remember as a former JW I'd hear others say out in field service about a return visit using this expression " they were searching for something, looking for the truth " .
So of course the WT Society is right there to offer their scam of imaginary " eternal Life " and imaginary " you'll never die or be sick again " - and people just eat this shit up- I swear. So I think that's what happened to my dad and mom . Now in their early 90's and late 80's they are too invested with my older adult siblings still in the JW cult- they feel they can't leave. And like you I look at my folks situation with pity. Like all of us- they will die eventually , sooner than later - and they were promised they'd never die. One reason I'm constantly calling the WT Society a criminal organization that uses people's lives up, then spits them out and just moves on as a corporate monster. Pretty disturbing. Mind control is powerful. As well as false promises. Lots of JW's and other cults alive and well due to these facts