I personally only envy those who cease to exist, I always have done, I mean they don't have to carry the burden that is existence anymore and are free from everything. As long as someone exists they are capable of suffering and to me that's nothing to envy. I always envy those who succeed at ctb and wish that it's me, but unfortunately I'm still trapped here.
It's true that none of our thoughts and feelings really matter to us once we are gone, of course it would be impossible for them to matter as we won't be there at that point. The fact that to die solves all problems is exactly what makes the thought of it so appealing, I simply never want to have to think about any of this and I never want to experience anything ever again. I only wish for permanent non existence for all eternity.