Wendy, I can identify with your being tired of the "new normal". That sounded like a big fat euphemism to me when I first got into all this. For what it's worth I think your poem is a good thing because you have expressed yourself, got it all out and done so in style - with an admirable honesty. This shows, I think, that you are able to stand back and look at yourself. It's hard to put it into words but from what I read, you sound like a cool person. As Erik says so admirably, this cancer can't take away your personality. A cool person is still cool even with a bit of a slur to the speech.
I think you need to see your doctor about your anti-depressants - maybe you need a change or adjustment. And I can't understand the lack of taste. I was told that taste buds are right through the mouth not just on the tongue. Hmmm. Finally - counselling. I talked to a cancer nurse who had trained to teach cognitive behavioural therapy and that was very helpful.
You are so young at 46 to be feeling like this. Lots of good wishes:)