In chapter one of Victor Stenger's book called GOD: The Failed Hypothesis: How Science Shows that God Does Not Exist, the very first argument he uses is under the heading of "Lack of Evidence". In that section he says the following.
"... as we saw in the preface, the overwhelming majority of prominent American scientists has concluded that God does not exist. If God exists, where is he? Philosopher Theodore Drange has termed this the lack-of-evidence-argument, .... Stenger later says that "... the very existence existence of nonbelievers in the world who have not resisted such belief [in God] is evidence against his existence. The problem of divine hiddenness is one that has taxed the abilities of theologians over the years--almost as much as the problem of evil ...."
Just because someone is a non believer at one point in time doesn't mean he or she is destined to an eternity of disbelief. Tom didn't believe until he got some blood on his hands. Maybe there is a time and a place for non resistant unbelievers to get what the are looking for.
It doesn't surprise me that most scientists don't believe in the existence of God especially if this is primarily due to a lack of scientific evidence proving his existence. Science looks to understand the workings of the material world and everything in it. It can't make any definitive statements about anything non material which may or may not exist, for the simple reason that it doesn't have access to anything outside of the material world.
If the material world has always existed, (that means it's eternal in the past) in one form or another, that solves the problem and science potentially will be able to explain everything. If however, matter hasn't existed eternally and came into existence, then it potentially came from a non material source. Matter can't bring matter into existence if it doesn't exist. This doesn't get you to God but it does get you to a non material reality.
So God isn't the explanation for why the apple fell from the tree, science can tell you that. God is the potential explanation for why the apple and tree exist in the first place.