Getting stoned would be a walk in the park since morality would be COMPLETELY the whim of those currently in power. Look at what has happened to the USA on the world's stage, IN SPITE OF CHRISTIANITY, since the unelected, warmongering neoconservatives have been in power.War and corruption would still exist even without religion. It can be easy to find something to fight about and we would still have greedy people.
People's relationships would be another thing. Maybe people would not be getting married, who knows really because people were getting married even before Christ.
Science would have progressed much further I think because at times religion held them back. I'm not saying necessarily for the good.
People wouldn't be getting stoned to death for adultery and other such crimes against Islam and I doubt people would have been burnt at the stake for witchcraft. I'm sure something else would have taken its place though.
Without the bible as a guide some archeology discoveries might not have been made like the city of Troy. Then again there might have still been a record of it.