I see this a lot. You think Moo would be concerned about her husband's health after having cancer, but no, she's only concerned that the old workhorse/income stream may be tripping up and that's not acceptable.
To me, this is one of the benefits of a childfree marriage or just being childfree in general. Because I am reasonably intelligent and I have decent communication skills, I was promoted into management at a fairly early age. I was good at my field, but I didn't like it much and I worked for a woman who was truly a bitch from Hell. EIGHT people left our organization in a year.
I took a downgrade to get out of that sucky-organization and did something that was related, but I liked better. This was something my colleagues weren't able to do because they had Keeeedz. Having keedz + nonworking spouse = no flexibility.
Later, I had a chance to make a move into the IT field, which I love.
To me, it's not worth the extra money to do something you hate. I thank Todd every day that I can do something I love, do it well, and not have to move up because I'm trying to pay for the financial burden that is a chyyyyyyyld. And if this job goes sour, I am mobile and I can go elsewhere.
Some spouses are just miserable people, like wifeys who want the husband to ProduceProduceProduce. Illness is one thing, but I feel responsible for paying for my and DH's financial obligations. But I guess I am the Big Dummy to some of my peers because they "don't want to work" and they feel perfectly entitled to a free ride because they shat out some man's brats.
And it's not just a female thing....some men want a woman at home doing all the grunt work. And although I always worked, my miserable WannaBreed Ex (even though I had a tubal before marriage) wanted me to shit out brats. I tried to explain to him the obvious benefits of having a two income family, but really, he was just clueless. He was the type who was never happy. If he ever married a woman who put the yoke on him, he'd probably hate that too. Malcontent.