Of course you don't. Christians frequently try to insist ex-Christians weren't actually Christian and didn't really have God in our lives. But how is this not being very judgmental? You don't know me, you don't know what my relationship with god was like, and, in all honesty, you don't even know if I'm making the whole thing up. I'm not, but what you're saying isn't something like "I don't think you were there because your name wasn't on the attendance list," but rather you saying something more akin to "I don't think you really went to the beach because you aren't sun burnt." The lack of a sunburn obviously would not prove someone did not actually go to the beach, though people who go to the beach often get them.
Being god fearing is why I didn't, but rather instead prayed for death. Until the damage god did to me was just so great and severe that a misplaced knife is the only reason I live today.
That's where I was with god. Without god my life has improved tremendously, and I even have a paper trail to prove it. One of the most astounding being going from barely graduating high school to graduating college with distinctions and honors. My therapists, family, and friends have even noticed tremendous improvements in my mood.
With god, there was no beauty in a sunrise/set, no delight in a delicious meal, no joy from the company of friends, and pleasure to be found in life. Without god, and living as a should--a life prohibited by the Bible and your god--I am much happier and don't even have to work at motivating myself just to get out of bed anymore.