I have no idea how you were finally convinced but you had to have an open mind to even begin to listening to an atheist argument. Changing someone's World view is next to impossible with a firmly established mindset and a support group such as a tight knit religious family and membership in a religious institution. Becoming an atheist separates you from these groups and as herd animals, we need that support and like mindedness. In your case as you stated "there was a flaw in your logic" but the majority don't see any flaws in a flawless god. Hence the term "blind faith".
Cap't Jack
Without explaining my entire view of the construction of reality, I'm going to disagree, partially. I think it is easy to confuse our individual minds with the group mindset. Sure, we're a herd, but if just one hears a rustle in the grass, he better look up and look for others to confirm or disconfirm it, else we all get eaten. People alive today have much more knowledge of who "got eaten" in the past and why. And since radio, we have a lot of more knowledge of what's going on around us. I don't think any mind is truly "closed", otherwise religious people wouldn't talk so much about doubt. We have so many ways to bring truth to light today, to not use them is foolhardy.