Puts hand up - I was there! Came in around '65 at which point I was 9 years old...still remember the bros/sisters saying "The 70's are here" when January 1, 1970 rolled around...real build-up to '75 but like others have said, there was a bit of backpedalling when 1975 actually arrived.
In hindsight, I can't believe how all that expectation just fizzled and we carried on as if nothing had happened, more field service, do more/more/more before the end comes...same old same old...while others had sold all and moved to South America or wherever for the 'few short months remaining'....what a crock.
Then there was the nuuuu light that calculations could have been slightly off considering the interval of time between the creation of Adam and Eve's creation, so maybe they were out by a few years - difficult to tell just how long that interval was. Holy crap, why had no one ever bothered about that little detail before? Where was the spirit's direction? A day late and a dollar short; nevertheless, brothers, let us not sleep on as the rest do.....keep preaching brothers, the end is nigh....blah, blah, blah....
That seemed to pacify the sheeples for a few more years, then there was the '95 generation change; I even slept thru that one - finally woke up around the time we 'studied' the tacking in the wind analogy - even if we change direction from left to right and back to left, we are still going FORWARD - whaaaaaaa?
RANT OVER