M0nica
To be fair I think there is, not unreasonable resentment that after the OP has nursed her husband through 2 serious illnesses, the moment she gets ill he starts talking of divorce.
It could be just panic, some people, mainly men, but including some women go into deep distress when faced with seeing someone they love suffering and not being able to do anything to put everything right. When my sister was on life support, before donating organs for transplant, we rushed back from holiday, to see her. In her room, two members of the family stood white faced at the back of the room, pressing themselves against the wall, as if to push through it, while two of us stood close to my dear sister and were happy to touch and talk to her she was still 'breathing' from the machine and warm. it wasn't that those against the wall didn't care -- they did, but they were overwhelmed with distress.
Mind you others are just selfish and do not want to care for someone, but expect others to look after them.
I agree with your balanced view, Monica, although I did agree with @Kandinsky too.....a bit! and the post about the 'too much sherbet...'