Was the conscious thoughts of Adam the reason sin entered the world or was it already here? I think it was his thoughts rather than the actions he had that sin entered the world. Thus, the phrase evil thoughts! I’m probably overthinking this by a long way but he knew what loneliness was like and by the actions of Eve he knew that he was about to be alone again so I think that he’d rather disobey God and die than to ever be alone again. Thus the need for companionship throughout life. I know his decision messed up the world but we all make sacrifices for those we love so what makes us different than Adam? Our actions are what gets us in trouble but it’s our thoughts that lead our actions.