Welcome, Grazer. The 'I used to be an atheist' line is a bit of a cliche' around here, it's used by pretty much everyone whose preacher told them anyone who drinks alcohol and has pre-marital sex is an atheist. When we hear atheist, we think 'rational skeptic' and want to know what great evidence or line of reasoning persuaded a skeptic like you. If there is a God, we really want to know about it. Then we find out the person is one of those people who checks yes for both 'are you an atheist?' and 'do you believe God is real?' in surveys.
So I hope you don't take the doubt too personally, it starts to get frustrating after the first few hundred times that it's merely a tactic to claim some kind of special 'I was like you, once' gravitas. Unless you didn't believe in God for the same reasons you don't believe in alien abductions, ghosts, fairies, or the Loch Ness monster; you weren't really like most of us at all.
So I hope you don't take the doubt too personally, it starts to get frustrating after the first few hundred times that it's merely a tactic to claim some kind of special 'I was like you, once' gravitas. Unless you didn't believe in God for the same reasons you don't believe in alien abductions, ghosts, fairies, or the Loch Ness monster; you weren't really like most of us at all.