As a born-in, I was there too. I can recall that they not only predicted the year, but also the month: October. It was stated from the platform at our hall. When it didn't happen, they lied and said they had never said that Armageddon was coming in 1975.
As a young kid, that prophesy was traumatic to me. They always wanted to let everyone know that folks were not doing enough for the Watchtower, and those who didn't do enough would not make it into the "new system." I felt like I wasn't good enough to make it.
Several families in our congregation sold their houses to live off the proceeds so that they could do full-time "witnessing" prior to the "end."
Although my parents were devout believers, I began my departure at age 14 and was completely out by age 15. I was never baptized. My parents had a rough time with me in my teen years. They were happy I didn't end up in prison.