If we work from the premise that God exists then God called me to be an atheist.
Then be a good atheist. You are rather bad at it, you know. To be a good atheist, you must first lose your resentment towards God. True atheists tell me there is no God of which to be resentful. Personally, I think it is only your "Total Depravity" God that does not exist.
Try to understand, God is pure love. Once one truly understand that God even loves him/her, it is immediately followed by, "If God loves me, then God loves everyone!" So go be a good atheist. If you have shielded yourself from God's love with Total Depravity, throw away that shield. Good atheists do not carry around a Shield of Total Depravity. Or the Book of Mormon. Lighten your load. Be free.