Already done, long ago. Sorry to hear of your wife's terminal illness. My wife has cancers and has undergone many treatments over the last ten years (and surgeries going back twenty years). She has beaten most of it, and has chemo as a maintenance regimen to prevent flareups when any lymph nodes show problems.
You're right, one never knows what will happen as one ages. My wife didn't drink or smoke, exercised daily, ate healthy food and was otherwise physically fit. As for me, I abused my body with alcohol and drugs when young, don't exercise and eat unhealthy food, but I'm going strong in my late sixties. Go figure. Our life insurance is principally on me, because my Dad died when I was a teen and his life insurance helped my Mom and younger siblings get by, and I wanted to make sure my wife and kids would be okay if I passed. Everything now in our trust will pass to our kids and grandkids, although our adult kids are doing fine with their lives.
Good health is a blessing and a gift. If you don’t have good health, you can’t work and earn money. So far I’ve won the good health lottery in life, and I am very thankful.
Sorry to hear that your wife has had to undergo so much chemo. Mine had it for seven months to no avail and it was most unpleasant.
I’m glad to hear your wife has beaten the disease so far. I’ve told some other patients about my aunt who had a mastectomy in the 1950s. She just recently passed away one month short of her 106th birthday. If that’s not beating cancer, I don’t know what is. :D