I'm in England, started studying with JWs in March 1971, baptised January 1972, I was 20 yrs old.
The Elder who took my study , only brought the 1975 date up when studying the "Freedom everlasting" book.
And then it was , 6,000 years since Adam created.
And that was it, no Armageddon is going to happen then.
It was never mentioned again.
In fact I very rarely heard it mentioned at meetings if at all.
There were no sisters running round saying "Armageddons coming"
In 1973 I met the JW sister who was to become my wife, and we never discussed 1975.
We married in July 1974.
Had our first child in OCTOBER 1975!
No one in that time ever said to us about having a child so close to "the end"
The congregation continued to grow after 1975, we had to split in two.
Then by late 1980's we had to get a bigger KH.
I always put it down to, that we had Elders who had their heads screwed on.
They were guys who were 50 - 70 years old, either born JWs or had been most of their lives.
I think they played a keep it calm and wait and see attitude.
I have met other ex-JWs here, who have spoken how in their congregations it was taken seriously.
I've spoken to a guy, ex-JW Elder, whose parents sold up their business and home to go and preach.
They died still believing the WT was right.
I have come across a wide range of stories.
Some like mine were 1975 didn't figure at all.
Others were it was taken up, seriously.
It just seems to vary from congregation to congregation.