I'll probably just kill myself. It's either get killed by a zombie and become a zombie or die on my own terms and spare the world from my undead corpse.

Also, a zombie apocalypse isn't going to "end" when the majority of the population are already zombies (which are functionally immortal given that they're already dead) so there's nothing to look forward to afterward. Like exactly zero zombie apocalypse stories have any sort of end game where the minority human survivors win or even how they could conceivably win. What am I living for then? To spend a decade or two starving, afraid, paranoid of everyone living and dead, and surviving just for the sake of surviving? Fuck that, I choose death. Survivors of even the nuclear apocalypse have something to live for because it can still get better with time and humanity might still have a chance to rebuild, but not a supernatural apocalypse orchestrated by forces literally beyond our rational and scientific comprehension.