Yes, I completely get this. My mum's best friend recently died completely unexpectedly and suddenly. It inspired in me such a jealousy and intense desire to die. I spend evenings consoling my mother and then go to my room where I lie in bed and think about death and methods and how much I wish I could just be gone like that. It's made me feel so disgusted with myself. Plus it means I now can't ctb because I don't want to be that selfish to kill myself while she's in the depths of grief. Wish I could disappear from the earth and everyone's memory without a trace.