I was baptized in 1973, a few months after I graduated from college. My first college roommate's mother was a JW. Later he became one and studied with me informally before I started a formal study. There were a number of factors in my conversion. I was in a bad place in my life and the JW's provided some structure and friendship. The fact that they did not believe in hell or the trinity interested me, along with the no war position. The 1975 hype tied in nicely with my world view - the world was going to hell in a handbasket, Richard Nixon proved all politicians were crooks, we were destroying the environment etc.
Shortly before baptism I met my wife, and the sealed the deal. She was also a convert, pulled in by family. We left together in 1989.