The apostates intrigued me. Being a fan of parody, I remember when apostates left fake Watchtowers on the windshield wipers of cars at a big district convention. But, I could not get my hands on one because they were being gathered up by attendants, leaving me to wonder what they said and why we cared. If we had the truth, surely we could address them point by point and prove them wrong.
I also met a guy at the door who pointed out a lot of things, including old publications and he said more JWs were in mental institutions than any religion (something I've never verified, and am still dubious about it). But I did sneak into the congregation library to have a peek and it read as he said. I dismissed it as old light or a typo, but I remembered.
Then I dated a non-JW girl who freaked the F out when she heard I was a JW. Wary of me, I can see, but her reaction (even knowing what JWs are) still seems way crazy. So she had me watch some show about JWs. On it was a Christian apologist who had anti-JW books for sale and I ordered Crisis of Conscience. I had heard about it and it also intrigued me. Why would somebody in the governing body leave? Weren't they tied in right to God? To me it was like the Israelites witnessing the parting of the Red Sea (Charlton Heston style, not Christian Bale) and then turning around and worshiping calves. WTF? And BTW, I think this was an arch-nemisis of my dad's who was called in as a ringer to debate JWs. More than once my dad was at an RV for more than a couple hours (with me waiting in the car) and he came back telling of this guy. And here I am, ordering from him.
Though I had seen things before, and wasn't happy being a JW, I'd have ignored problems and forced myself to be a JW or would have drifted away to become one of those non-practicing JWs who believes they left the truth and would some day be ripe for a shepherding call to bring me back to the fold at some point in my life when I was down.
But, I read COC, found out the JWs were false, and consciously decided they were wrong and I couldn't return to them.
So, it was apostates that got me out, not some deep down feeling that things were wrong. A few years later the internet came out. And it has only reinforced and enlightened me. My mind was already made up.