The Predator thinks about mortality.

"I mean, we're warriors, right? I get it. But isn't there more to life than trophy hunting? It's like, my wife just found out she's pregnant, and what if I don't live to see my kid grow up? When I was younger, sure--the hunt was all I cared about. But now... I don't know. The thrill of the hunt has been replaced by the overwhelming consciousness of my own mortality."