In 1969 they said I would not graduate from high school, but I did and now I am retirement age.
In 1941 the Watchtower published the aptly-named children's book entitled "Children." The book admonished kids to forego thoughts of marrying in this system because the end was near, close enough to where it didn't make sense to burden themselves with marital responsibilities. For some years marriage was frowned upon and seen as a sign of spiritual weakness. It wasn't until Nathan Knorr's marriage in 1953 that this policy and outlook was reversed.
A 10 year old who received that book in 1941 would now be 83 years old. Hopefully they didn't follow the book's advice.