What is the tone of this poem and who is the speaker? how do you know?

my life was the size of my life.

its rooms were room-sized,

its soul was the size of a soul.

in its background, mitochondria hummed,

above it sun, clouds, snow,

the transit of stars and planets.

it rode elevators, bullet trains,

various airplanes, a donkey.

it wore socks, shirts, its own ears and nose.

it ate, it slept, it opened

and closed its hands, its windows.

others, i know, had lives larger.

others, i know, had lives shorter.

the depth of lives, too, is different.

there were times my life and i made jokes together.

there were times we made bread.

once, i grew moody and distant.

i told my life i would like some time,

i would like to try seeing others.

in a week, my empty suitcase and i returned.

i was hungry, then, and my life,

my life, too, was hungry, we could not keep

our hands off our clothes on

our tongues from