Let me tell you young men a story.
A young Marine looked over the front ramp of the landing craft, as it took him to the beach. Still 200yds from shore, he could see men cowering 200yrs further up the beach, with their backs to the emeny, up against a 3' high breakwall. He was discusted by what he saw. They were cowards, he thought. "Look at those old fools, I'll show them."
The ramp went down, and along with his platoon, he charged out running high and screeming loud. As he was repeatedly splattered with blood and knocked to the ground, he could see his fellows dying all around him. Each time he was knocked down, he would rise the less when he continued forward. One of the few in his platoon to make it this far, he crawled the last fifty feet on his bloody face in the sand, begging God for mercy.
He reached the wall and sat as he turned just in time to see the ramps go down on the next wave of landings. As the fresh fodder came out running high and screeming loud, he thought, "look at those young fools, someone needs to warn them."
If you make it to "the wall", the scramble up the beach will change you,
or it will kill you.
Life is not unlike that story, it has a way of changing men.
Life's a beach.
A more direct answer to you query:
All reasoning is presuppositional.
The errors of youth are not necessarily logical errors but a lack of context, a narrowness of perspective and a poverty of experience.
I once asked my grandson what he was learning in school. "Counting", he said. "How high can you count?", I asked. He looked at me like I was stupid and said, "all the way". "All the way to what?" I pressed on. "All the way to a hundred, Papa. All the way to a hundred."
He had no idea that there was so much more. He was young, and so are you. There is so much more to the workings of society than a twenty something can even begin to imagin.