T-Rex: Lets say that every day there's a small - BUT NONZERO - chance that you're gonna die in some random accident. Say, just to pick one COMPLETELY at random...
T-Rex: ...GETTING HIT ON THE HEAD BY A METEORITE?
T-Rex: Now this chance is SO SMALL that you could live your entire life and never get beaned by ANY cool space rocks! And that's great, assuming you want to die in some BORING WAY that doesn't make people say "Man, I really thought there was NO WAY that meteorite was gonna hit him". But now let's say you live for a really long time!
Utahraptor: As your lifetime extends, the likelihood of you dying from a crazy rare accident approaches CERTAINTY?
T-Rex: Exactly!
T-Rex: Even the most UNLIKELY things that could happen WILL happen to you, if you're immortal!
Utahraptor: Well, not ALL of them. Events so unlikely they might not happen, even over the universe's lifetime, aren't guaranteed.
T-Rex: Ah yes, I forgot!!
T-Rex: Specifically, I forgot how our ever-expanding universe means that life will one day find itself alone in a cold, indifferent, and colossal void where even dead stars are rare, before it too is extinguished. Hah!
T-Rex: ...
T-Rex: What a silly thing to forget
