Jesus you are pedantic. I am not hedging my bets, I am just honestly admitting that with things that are impossible to prove, it is foolish to say with absolute certainty that I am correct.The bolded part seems to me to define you as agnostic, not atheist. An agnostic is an atheist who hedges his bets, which is what you're doing there.
Would you feel better if I said that I am certain in my mind that there is no supreme being but I can offer no concrete proof that I am correct?