We never know when death, sickness, old age will strike. Not to mention natural disasters, car accidents, life changing circumstances. The only one who can cure yourself is not your doctor, your nurse, or your wife. No matter how hopeless the situation is, even if you're in the terminal stages of cancer, don't give up. Explore all possibilities and all remedies.
Doctors often give the worst case scenario.
In your mind, you should always see the best case scenario. When you say your marriage vows, you mutually agree to care for each other in sickness and in health. So, if you do get sick, take steps to remedy the situation immediately together. To me, it's almost a responsibility to get well. There are so many stories of people who reverse their illness, some of which are considered miracles.