I think when you're raised into a religion, or with a general concept of a god, prayer, etc., it takes a bit of time to undo the "what if I'm wrong..." idea. At least it did for me. For a good chunk of my teenage years I continued to try to rationalize the existence of a god or the truth of the bible, even though I was already classifying myself as an agnostic at that point.
I was scared of being wrong, but I slowly started understanding I only believed what I believed because of my geographical location on this earth, when I was born and who my parents were. Had I been born in Greece in 359 b.c.e., my religious beliefs would be wildly different and the salvation of Jesus Christ wouldn't have even been a thing. Over time the questions became less and less important because I started to see that religion and their concepts were simply just circumstance of time and place, nothing more.
I was scared of being wrong, but I slowly started understanding I only believed what I believed because of my geographical location on this earth, when I was born and who my parents were. Had I been born in Greece in 359 b.c.e., my religious beliefs would be wildly different and the salvation of Jesus Christ wouldn't have even been a thing. Over time the questions became less and less important because I started to see that religion and their concepts were simply just circumstance of time and place, nothing more.