Statistically speaking that is not true, nowadays at least. A census of members of Mensa found that a good majority were not Christian, same thing with doctors, at least in America. People at the university level are notoriety non-Christian. It seems that the more you know the less Christian you are.
None of what precedes your last concluding statement actually supports it.
Statistics have been shown again and again to be easily manipulated and made to show whatever is desired. As Benjamin D'Israeli, former Prime Minister of Britain, once said, "There are three kinds of lies: lies, damnable lies, and statistics."
What may be statistically true today does not negate the fact that many brilliant men of the past
did believe the Bible to be true. And don't confuse having access to a greater body of information with being smart. People may know more today than they did a century or so ago, but this in no way means they are better able to think and assess facts critically - often the reverse.
It is interesting that you focus on those in Mensa who aren't Christian as if they somehow dissolve the fact that smart people, people who
are members of Mensa, are Christian. What do you say about these folk? How is it that they are both highly intelligent
and believers in Christ? According to you, their intelligence should have led them away from faith in God.
People at the university level are notoriously non-Christian? So? If, as you say, the more you know the less Christian you are, I should not be a Christian and neither should my wife. We are both university-level in our education and we both believe in Christ as Saviour. I suppose we are exceptions to the rule? But what about the many others we know who are both university graduates and Christians? How many intelligent Christians does there have to be before they are more than merely exceptions to your rule?
The fact is, intelligence has nothing to do with the current trend away from a Christian worldview in North America. The shift has much more to do with
philosophy than knowledge or intelligence.
Here's a list of about six hundred notable exceptions to your contention that "the more you know the less Christian you are":
http://www.tektonics.org/scim/sciencemony.htm
Peace to you.