To accuse people like OBL and Teeside of "sheep like thinking" is unfair and hardly mature debate, is it? I hate getting involved with these threads because, IMHO, the anti-religion stance is defended as blindly and with as little regard to the evidence as they accuse the pro stance of adopting. But three points you have raised:
1. Come off it, no one is saying that Christmas is Jesus real birthday, and yes it is matched to an old pagan festival. So what? Even Christians can be pragmatists, you know.
2. Evidence? I am not going to produce evidence for all faiths, but there is amazingly strong evidence for Jesus as a real historical person. And the prophecies in the Bible concerning him, and the very way his Disciples and Paul behaved after his death, raise questions that need proper debate, not facile dismissal as "sheep like thinking".
3. This is the one that always amazes me. What evidence for Millions of deaths in the name of Religion? More people have died in the last 120 years in wars than in the whole history of humanity. The leaders behind the vast majority of those deaths? Hitler, Stalin, Mao, Pol Pot, Sadam Hussein (who only entered a Mosque when he realised he needed to portray himself as a Martyr) and more, and all of them not only not religious, but actually avowed aetheists who tried to wipe out religion. The danger is not religion, but people's hunger for power. And of course a sweeping statement about the dangers of religion ignores the fantastic work done by the Church of England, Sally Army and others for the poor and homeless, by Tearfund, Christian Aid, and many many others for the Third World.
If you are going to argue against religion, please find out what they DO believe in, and study the evidence for that (because it does exist).