T-Rex: One day everyone on Earth became immortal, but only the dinosaurs. AND their children became immortal too, if they chose to have them.
T-Rex: ...I think we're good?
T-Rex: And YES, this would quickly lead to overpopulation, but I built in a loophole: we could still kill OURSELVES. So if conditions ever became intolerable, we had a way out.
Dromiceiomimus: So Earth therefore became desperately overpopulated, with life that was, for most, juuuuuust MARGINALLY better than death?
T-Rex: ...Man, I guess so, huh?? THANKS ECONOMICS!!
Utahraptor: But we could improve planetary conditions, so more people would stick around!
T-Rex: Yes!
Utahraptor: ...but that just highlights the reality that better lives result in more people living, pushing things back to marginality.
T-Rex: MAN. Is there not a SINGLE STORY in which immortality doesn't screw over everyone forever?
T-Rex: Wait. WAIT. I've got it!
〚a book cover with text in Batman The Animated Series font〛
Book cover: THE DAY BATMAN BECAME IMMORTAL, AND ALSO REAL
Book cover: AND ALSO MY BEST FRIEND
Book cover: ALSO, I BECAME IMMORTAL TOO
Book cover: I DON'T WANT TO GIVE THE WHOLE STORY AWAY IN MY BOOK TITLE SO I'LL STOP NOW, BUT LET ME SAY THIS: WE DEFINITELY KISS