In the normal state of existence - spiritual matters aside for a moment - humans tend to make decisions on the basis of what makes the most 'sense' to them.
There are a number of factors which determine 'making sense'. One of the main factors is what one is taught as a child. "My Daddy told me..." is the justification for all manner of opinions and choices. On the same note, religious (and anti-religious) training while young has a great effect on most people. Sometimes the 'effect' is in the reaction to the teaching or training.
There are those - and I like to include myself in this category - who observe as much as possible, look through alternatives and eventualities and then decide on the basis of the most intelligent alternative to the question.
And of course, two people can analyze the same factors (as in the paragraph above) and conclude different solutions. Scientific research is filled with such.
This changes somewhat when the idea of God enters the discussion. This is not merely a historic discussion of whether someone lived. The discussion of whether Ivan the Terrible lived is much less contested than whether Jesus the Christ lived. Ivan the Terrible never claimed to be God and demanded love, fealty and obedience for all time in all nations.
When God enters the discussion, at stake is one's entire way of life; one's values, one's morales, one's life goals and one's Eternal destiny. Yeah, that changes the nature of the debate.
Interestingly, the debate rages - as to 'choice of belief' - in the Christian community. The difference of opinion between 'Calvinist' and 'Arminianist' includes the idea of 'predestination'. So a 'proper' Calvinist is obliged to say "God chose me" rather than "I chose God".
In the spirit of transparency, I was raised in a Christian home. I am by choice - as far as I can tell or relate - a Christian. From my studies and observations, I am sure the Bible is the revelation of God to mankind; and that it is reliable in terms of the lessons it teaches, the nature of God as revealed in the Bible, and the outline of history it displays. This conclusion simply seems more likely and logical than any other alternate theory.
However, I am not a 'Young Earth Creationist'. My parents were and most of the teachers I knew were. So all the brainwashing -

- didn't take. Not because I do not 'believe' the Bible, but because I believe that is what the Bible relates.