I do too, at least to some degree. However, rationally I know that once I am gone from this world, no more existence, no more suffering and pain, and regardless of what people think or say or whatnot, it's all irrelevant (as I would be dead). I feel like similar results would happen too, people who gave maybe half a shit would act like they cared a lot (even if/when they don't - all superficial and they just want to boost their own egos.), people who don't give a shit would come out of the woodwork to get some limelight albeit briefly, but of course, the most impacted would be my immediate family, they would be sad and sad for a long time. However, I cannot simply suffer just because people will be 'sad' at my death. Death would be my release from this hell that I am living in.
I suppose, I could have a post-mortem address (lecture/monologue/speech) in my CTB note to speak to them as if I was alive. In other words, telling them preemptively and in advance. (e.g. Other people: "I could have helped him!" <-- Me: "No, there is nothing you could do or say to change my decision. I made this decision by myself and for myself. I am fully aware of the consequences and have prepared for it.")