Not foolish at all, no. I think that with such a serious illness, it’s appropriate for your family to help you. I hope you stay as healthy as possible, and that you remain positive about the situation (though it’s also okay to feel sad or conflicted).
What makes you seem very privileged (and so a bit entitled) is your dismissal of the work that your family is doing. If you don’t care about your life, you might as well sign an organ donor card and be done with it. Please don’t. But that is the logical consequence.
If you do care about your life, it would be kind and appropriate to thank your family members and also appreciate all the work that’s going into the creation of your life-saving pills. And, to take some of the burden off your wife’s shoulders, you might want to learn about the meds and their schedule so she can relax a bit. If you’re recovered enough, that is.
There’s a debilitating psychological illness called “burnout”, which caregivers are often diagnosed with. It presents like major depression in some ways, and is not to be trifled with. The people most at risk of burnout are those doing unappreciated work. So no matter what else you do: please thank your wife. She cares so much about you.