Misc - I think your 3rd point is that we have this idea that abusers are some kind of social monsters, when in fact the opposite is often the case.
Abusers are extremely clever con-artists. So clever that they believe themselves. They can be smooth and slick, able to play the nice guy, caring person etc etc. They do it so well that they believe it of themselves.
I can't give details due to confidentiality issues, but having been involved with an intervention program for abusers (and we're talking that kind capable of killing the person they 'love') every single one of them described themselves as caring and charming. I read a book for my college course based on studies of men in prison for murder/assault/rape. Every single one of them said how they made their victims happy, they weren't really abusers etc.
We need to get rid of the idea that we can spot an abuser, that they somehow stand out as being a misfit, or you can tell that they mean to harm someone.
Abusers are real people, part of our society, and often incredibly nice to just about everyone, except their victim(s). That's why they can get someone to care for them and be in a relationship. Without those skills they'd just be a thug. They may be able to do some short term damage, but long term they wouldn't be able to ingratiate themselves with people.