I grew up with an abusive/crazy father.
Having a man as caring in my life as my husband has done a world of good in healing me from that environment.
In spite of all the abuse I witnesses him perpetrate on my mother, my step-mother, and myself, I would attend my father in the hospital if he was sick and I needed to be there.
It's called acting like an adult.
However, in relationships studies there has been shown a clear indication that how a man treats his mother/sisters is actually a very good indication of how he will treat his partners.
There is a clear difference in a man who avoids his mother because of a history of abuse, and one who treats family members badly just because he can get away with it.
For instance... my husbands older brother, raised in the same way and by the same woman, has not even bothered to call her. Guess how he treats women, including his daughter who is a teen... dismissively. If a woman isn't doing something FOR him, she isn't important to him at that moment. That actually goes for men to some degree as well, but he is particularly hard on women. He "loves" his younger daughter, who is not a teen yet and still has daddy as the apple of her eye, but this will pass as soon as she begins to develop into a young lady.
This same guy lived in my MiL's Florida home while she moved to her NC home for an entire YEAR, and she paid the phone and electric for him (job troubles)... while he continued to go out and have fun on weekends and put money into his classic truck. That was just two years ago. How soon he forgets. What a guy.
Also... her husband continues to be cruddy, though he has shown up to the hospital for about 15 minutes yesterday and today. He is still refusing to bring her cell phone to her, has let its battery die, and has not checked the messages. She actually needs it to speak to her sister who is supposed to be coming to take care of her. My husband of course is doing all of that for her with his phone... but he didn't have the right number for his mother's sister (he had an old number) so he had to jump through hoops to find it.