Daj, I don't really get the idea that because you forget something means you never consented to it in the first place. You have never forgotten something you agreed to do in your life? As for comparing regretted sex and drinking with rape, well I can't even begin to explain what is wrong with that.
I guess a big part of the reason we forget who we are and where we came from when incarnating is that that is the only way of engaging with this reality enough to learn from it. That is, if everyone knew all along that life is something of a game and an illusion, we wouldn't engage enough to learn from it. On some level, you have to take this reality seriously enough for it to have an impact on you. Otherwise you would just look at everything as a harmless computer game with no consequences.
Although, I have to confess that it is extremely hard sometimes. Especially when you have had a life of hardship, trauma, loneliness and pain. To know that there really is a universe of infinite love and possibilities and all the rest, but you just don't know it or have erased your memory of it.