God: T-REX WHAT WOULD YOU DO IF SUDDENLY EVERYONE TURNED IMMORTAL AND THEY ALL KNEW IT
T-Rex: Oh, that's easy!

T-Rex: I'd study fish!

God: HONESTLY NOT THE ANSWER I WAS EXPECTING
T-Rex: See, everyone ELSE would be skydiving and racing cars or whatever, and maybe SOME of 'em would be studying things that'd help 'em out down the road, but fish? Very few people would have fish as their first stop when becoming newly immortal.

Utahraptor: And the benefit is...?
T-Rex: I'M the most interesting newly immortal person!

T-Rex: Utahraptor, you go to a party and everyone's talking about the same stuff - how cool it is not to die, investing tips, etc - but meanwhile I'M the only one over here with rare fish facts. Who are you going to talk to?
Utahraptor: I guess the fish guy.
T-Rex: EXACTLY!

Off panel: So are you going to study fish now, to become that interesting guy already?
T-Rex: Oh no, life's FAR too short.
T-Rex: Plus I'm doing cool turtle facts right now anyway!