I've been a bit conflicted as I really don't know what to do about it.
Are children obligated to take care of their parents when the parents are older and in ill health?

I ask because my elderly father with COPD thinks that we are obligated to take care of him. His latest weapon "I am your father". Of course he refuses to acknowledge that he wasn't the best father in the world. And he thinks he can continue to treat us like **** and we just have to take the emotional abuse from him.