I became a Christian back in 1973, then I was a naive 20 year old who had taken an interest in the Bible, but I did not attend a church for another year. When at work I shared my faith to a fellow employee and friend (and probably my mentor as well) who was a couple of years older than me, he kept saying that Jehovah's Witnesses says this and Jehovah's Witnesses says that.
I became curious on why if there is only one Bible, why are there so many different faiths, all claiming to be Christian yet disagreeing with each other and each claiming that theirs is the right group, and insisting that God favours that particular group and will ignore and judge all others.
I guess this curiosity was good for me - it made me learn about the faith I believed in and why I believed in it.
A couple of JWs eventually did knock on my door. I invited them in and almost straight away we began to discuss about the Deity of Christ.
My instincts told me that he was God Incarnate, they believed that he was not God, but the Son of God, and a created being, "a god, but not God himself."
By using their own version of the Bible (the New World Translation), they kept quoting John 1:1 -
In the beginning was the Word, and the Word was with God, and the Word was a god...
This led me to to go out and buy an Interlinear Greek/English New Testament and with it I learned a smattering of Greek.
But eventually, after studying this and other books on this matter, particularly on that opening verse in the Gospel of John, I came to realise that the New World Translation is psychologically dangerous to all not versed in the Scriptures, and it is an effective tool to brainwash and join that group.
They don't come to me any more. Despite their friendliness and politeness, I am one of the "goats" (as opposed to a "sheep") who will be destroyed by Jehovah at Armageddon, that great global battle between a God seeking vindication, against all of "Satan's forces" which includes every church member not belonging to the Watchtower Society.
(Actually, the Bible places the Battle of Armageddon not as a global but more of a local area, at a large plain of Esdraelon in Israel, overlooked by the ruins of the ancient city of Megiddo.)