Yeah agree with Canadane, they're not human and not even from the same time period as us, we don't know what they value as important.

But I get what you're saying OP, because constantly worrying about the world eventually dying is pointless–all good things die eventually.

The Ea is an ancient race long past, and like many other ancient civilizations, they were trying to prevent the world from dying and couldn't and this frightens them because it's a grim fate for the final generation to witness it.

The whole angle of "the whole universe is ending" isn't new and it's not something that can be answered, even irl.