Great-Great-Grandpa I was wrong to put you in that position, Billy, just like you're wrong to put Little Billy in it now. You're so obsessed with ending your life, you're not thinking about what you're doing to his. You must wait to die of natural causes. Grandpa But I've been waiting for 25 years. Great-Great-Grandpa Let nature run its course, or else end up in limbo. Natural causes Billy, natural causes...
@thunderwarrior
Great-Great-Grandpa
I was wrong to put you in that position, Billy, just like you're wrong to put Little Billy in it now. You're so obsessed with ending your life, you're not thinking about what you're doing to his. You must wait to die of natural causes.
Grandpa
But I've been waiting for 25 years.
Great-Great-Grandpa
Let nature run its course, or else end up in limbo. Natural causes Billy, natural causes...
south park quote
https://southpark.fandom.com/wiki/Death/Script
Is that his motivation?