Robbie,
I have two responses:
1) It doesn't matter HOW/WHY my car got in the ditch, I need to get it out and keep driving down to the destination I was created for.
2) Why? Because my perps were abused before me: sexual abuse is learned behavior, IMHO.
Gratefully, my csa was part of a larger neighborhood operation that I resisted joining when I was older-teen age boys were the preferred target, I was a bystander who was victimized at age 9.
I say this because I know why these boys abused me:
they were abused themselves. (They also have ended up with wasted, miserable lives, haunted and conflicted by the path they took-I watched one of them die 36 years afterwards, and I thank God I didn't follow that path.)
Tell me, how would knowing "WHY" help you in your life today?
My skills and daily practice at unlearning all those consequential behaviors of my csa are much more important than an explanation why.