I'm pushing 40. I have a nephew who is 16 years old. If I talked to him about 1914 and the role it played in not wanting to be a JW anymore, he'd look at me like I was crazy.
It'd be the same look I would have given an "apostate" had he talked to me about 1975 when I was 16 in the mid-90s.
This stuff is cyclical.
In the:
1910s they had to deal with the fact that 1914 didn't see the conclusion of the Great Tribulation.
1920s they had to deal with the failure of 1925 as the date when Old Testament "princes" would be resurrected
1940s they had to deal with the failure of WWII to bring Armageddon and Rutherford's statement that there were only "months" left
1970s they had to deal with the failure of 1975 as the end of the sixth creative day
1990s they had to deal with the failure of the "generation" of "seventy to eighty years" being a deadline for Armageddon
There have always been two generations present at the local Kingdom Hall: those old enough to have already undergone a major prophetic failure and those young enough (or new enough) to be clinging to a new prophetic deadline that hasn't yet collapsed.