Because all scientists back the atheists. Einstein, Stephen Hawking, they will all tell you (speaking as a scientist) you cannot prove God’s existence not that they are atheists themselves. What is your view on this?
Two main reasons: 1. I can explain everything I can see in the natural world using science. 2. Whenever you pray and it doesn’t get answered, the reason that is given is “God works in mysterious ways”. This doesn’t seem reasonable to me.