Have you ever had an existential crisis in your life? One time, maybe, you thought about the fact that you won't always be here, and that freaked you out. Well, that's being a human, buddy. At some point, in some place, in one way or another, we'll pass on through this earthly realm. It's incredibly scary to me, but it's scary for every normal person, so at least we can all bond over the limits of mortality and how we'll plan our funerals. But have you thought about what you may put on your gra…