“Yes,” by former Poet Laureate William E. Stafford:

It could happen any time, tornado,

earthquake, Armageddon. It could happen.

Or sunshine, love, salvation.

It could, you know. That’s why we wake

and look out—no guarantees

in this life.

But some bonuses, like morning,

like right now, like noon,

like evening.

(The Way It Is: New and Selected Poems, Graywolf Press, 1999)