I'm not sure that I completely understand the question but in alot of cases the abuser has severe mental health issues and often blames the way they are brought up.
Hi there and welcome to med help. Well, it would be very difficult to pin point a specific cause to why abuse and particularly sexual abuse happens. Sadly, it is nothing new. It may 'seem' like it is increasing but that is only because people are more openly talking about it now. The shame associated with it kept many very quiet through the centuries.
One of the issues with sexual abuse is the repeat pattern. If a child is abused, there is a very high statistic that this same child will go on to abuse either another child when they are still children or teens or be an abuser as an adult. Almost every child upon child molestation happens because the child himself was once molested. Very sad.
The prevalence of abuse in the home in general during youth is a strong indicator of what one's adult life will be like unless we actively break patterns. We see as our parents do and do it ourselves. Or, our inner psyche becomes comfortable (even though we really hate it and are unaware that we are doing this) with a particular pattern and we subconsciously seek it out. That's why anyone that has been in an abusive relationship as the abusive or the abused person, should seek therapy.
I think we also live in a society that keeps pushing the boundary of what is okay--- sexually and otherwise. This doesn't help. We are a 'sexed up' culture and I'd sure like to see that toned down.
As far as a solution, this is difficult. I think we need more awareness and more ways for a child to get help. Sadly, a lot of spouses will protect the abuser to save their lifestyle. That's just sad. We need to promote putting our children first and having a clean, honest life style ourselves. But if there are other outlets for a child to be heard such as in the school setting . . . open door policies for counselors with the kids to be able to share what is going on at home. Education is important. And a better mental health system that can offer services to abusers and abused folks.
It's a tough situation and again, sadly it is not new. peace