I think it really does depend on the type of abuse, and the reason.
I have absolutely no doubt that Dh had the potential to be an emotionally abusive twat. In fact, I sort of know an ex-gf of his and she is too discreet to say anything but I've had hints.
Why? Because DH has a bit of a temper. He can be very volatile and a bit scary. When he was growing up, his parents did not make any attempt to stamp this out but rather just "rode it out". They also often adapted behaviour, activities etc to accommodate /pre-empt DH's behaviour.
As a result, not only did he think this was totally normal, he was completely and totally oblivious to the affect this could have on other people. And it wasn't just at home. I have heard of him having huge blow ups with friends and even in a work situation. Where he would then play the victim.
DH is ALSO a very kind, loving man who is very intelligent.
So when this behaviour really showed itself after we were living together, at first, I found myself slipping into this mode where I'd think, "Oh, it's just a once off." Then that wasn't the case. So then I thought, "Oh, I'll just ignore it" except that only worked if the issue was something I didn't really care about. etc etc.
And then one day, he lost it over something so ridiculous and stupid AND then behaved so appallingly badly and dangerously that I told him we were over if he didn't deal with it. When he calmed down, he sought therapy. And things really did change. But, and this is essential, he changed because he 1. accepted that his behaviour was not okay and 2. he really really wanted to stop.