Why does the world lack faith? Is it because there is lack of evidence, hence disbelief?
According to the Bible, No. This is not the case. To the contrary.
There is a huge amount of clear evidence, and many do believe. However, the Bible highlighted the reasons for the lack of faith - the faithless.
It said... "The reason why they were not able to believe is that again Isaiah said: “He has blinded their eyes and has made their hearts hard, so that they would not see with their eyes and understand with their hearts and turn around and I heal them.” Isaiah said these things because he saw his glory, and he spoke about him. All the same, many even of the rulers actually put faith in him, but they would not acknowledge him because of the Pharisees, so that they would not be expelled from the synagogue; for they loved the glory of men even more than the glory of God." - John 12:39-43.
So the reasons the Bible gave are, 1) God prevents them from having that faith; 2) They fear men, because they prefer glory from men.
In other words, God leaves people in a spiritually blind state, because they don't want to accept, or they don't want to face rejection and ridicule from the faithless, but want to receive praise from them.
Why would God, not rather open their eyes though. Does he not want to save them?
The simple answer is given at 2 Thessalonians 2:11, 12... That is why God lets a deluding influence mislead them so that they may come to believe the lie, in order that they all may be judged because they did not believe the truth but took pleasure in unrighteousness.
According to the Bible, the simple answer is... it's what they choose.
Do they want to be faithless? Is that what the Bible is saying? Evidently, in a way, yes.
A person may believe something but they may not want to believe it, for their own personal reasons.
For example, the text above states one reason. The text quoted earlier gave another, when it said, they love the glory of men, and they feared rejection.
Is God fair in letting people choose even though it results in the person's harm, rather than their benefit?
I'm glad I can make a free choice, and I am sure Atheists, and agnostics are equally happy that they can freely choose what they want to accept.
So whether one has faith or not, is actually up to an individual. It a personal choice.
Thoughts?