Can't be helped Newt. As bikers we try to be more aware and watch for other bikers and any vehicle for that matter. But were all human. Everyone who has ever driven has made a mistake and not seen someone or inadvertantly cut someone off. You don't need an excuse bro, these things happen.
We need more people like you who realize thier mistake, why they made it, and then try to correct it as to not be a repeat offender and hurt someone.