I guess is very simply. All things is back to your mind-self. Are you believe for God or not?
If Yes, So you got the answers ,as well as the reverse for no.
If Yes, So you got the answers ,as well as the reverse for no.
The simple explanation is as you say. But if you understand the proof that God exists, and then find the proof that the Bible is the Word of God, your faith will be strengthened in the direction that God exists in the minds of people. Why? Because God says it in His Word.
Believing God or not believing Him was the original problem that people had. If they had simply believed God in the Garden of Eden, rather than the snake - btw, the medical has two snakes on a pole - they would not have sinned, and we would not exist in a corrupted state that dies after a while.
The answer to your question is that ALL people are religious.
Another answer is that regarding the formally religious people, not all of them are like you suggested. And, there are many formally non-religious who think in the way you suggested that the formally religious people do.
The Jesus-saved people are simply more blessed because they understand that they have salvation. Most of them are spiritually weaker than those who don't believe in Jesus salvation. The evidence for this is that they didn't have the strength to resist the Holy Spirit working faith in their hearts like the unbelievers do.
So, the formally religious people who think that they are better, are forgiven for this foolish thinking through Jesus salvation. But the formally non-religious are not forgiven when they think these proud thoughts, because they don't have Jesus salvation in them. However, they can change, and many of them will.