Karlach is the only character ending up where she was, ends up dying, or is a squid

3 terrible choices to choose from,
while someone like Gale who is a nuclear time bomb gets the "get out of jail free" card and lives to become god

while all Karlach really wanted was to LIVE!! nothing else. Not power, not fame, not glory, just live to grow old with Tav. It's the most simple desire of all companions in the entire game and she is the one that gets denied. it just doesn't make sense!