We mock the notion that we should fear. Because, fear loses to laughter.

The strongest people I've known in life found a way to laugh in the most dire of moments. It's a brilliant example of one's ability to exert control, even when we would otherwise have none.

I'm reminded of the scene in Casino Royale when Bond mocks the antagonist, "I can tell the world you scratched my balls" (not sure of exact words) as he's being tortured by way of rope whipping to the genitals.

We can't control the world, but we can control ourselves.

Being hopeful and being curious are equally valid reasons for sticking around. Whether you're hopeful or curious, both can be considered forms of "caring".

If you never hopeful or curious, suicide is still not the default remaining option. You could choose to pursue nihilism.

Recommended study materials on nihism: Big Lebowski. If you don't laugh once, you know whose club to join.