Outside of mental illness, I cannot fathom choosing death over trying a different type of insulin. I may be biased, because I've used so many different types over my life.
I think the "outside of mental illness" is a pretty important qualifier here. I've never hit the point personally where I'd prefer death to diabetes, but I've certainly been close, and were it not for a pretty fortunate life - good insurance, ability to afford a good doctor who is knowledgable in this field, ability to afford a CGM and never have to worry about paying for testing strips (another ridiculous expense - frankly far worse than insulin given how much larger of a population it impacts) - I could certainly see myself in their shoes.
The other comment said it well—I would additionally encourage you to help other diabetics to understand what flexibility they have, using your experience.