I am so glad that Jesus helped you with this. That he gave you strength enough to leave this destructive behavior behind. I also had a short period when I did hurt myself and was filled with self hatred and depression. But just as what happened to you I prayed to Jesus and he gave me strength to overcome this and leave it behind me... even if it sometimes come back and haunt me and then I will have to pray extra hard.
But... and this is still a big but. In all the things you described I cannot see why the fact that you are/where bisexual had anything to do with your destructive behavior? The problem was that you slept around, did drugs and hurt yourself. Not that you where attracted to both genders.
You can't compare molesting a child with bisexuality that is between consenting adults.
Abusing a child is a vile, vile thing. It is just like rape and other cruel things you can do to a person! That will change that innocent soul for life.
When it comes to a husband beating his wife - well according to the bible he has the right to do so. But I do not think that Jesus would judge him lightly. As do I not think that Jesus would look well up on slavery, stoning and things like that. Even if it is "allowed" if you read the bible with those glasses.