tl;dr: Hypocrisy is compartmentalization of ideals for preserving 'social graces'.
If I remember correctly, Russell thought that if anything could exist timelessly, without a cause, it might as well be the universe and not God. But the problem is, we now know (with some reasonable certainty) that the universe began with the Big Bang. The universe could have been timeless, but it isn't. Postulating that there is a timeless First Cause outside the universe solves this problem, since there is no similar theory that shows God has a cause, though it's not a falsifiable or very satisfying solution.
Introversion and confidence are completely unrelated. You probably weren't implying that, but for anyone who comes across this in the future: introversion is not about confidence, shyness, self-esteem, anxiety or anything of that sort. The sheer amount of people who fail to make this distinction is one of the most irritating things I have come across.
Why is it that people use "belief in god" as "belief in Christianity" and "no belief in Christianity" as "atheism"? Even disregarding other religions, there's a whole range of positions between them.
Hah, the looking away part has happened too many times for it to hurt me anymore.