Voltaire's fable

This is the best of all possible worlds we kill, are killed, and cry in.
Behold the heartless devil globe we laugh, we love, and smile in.
Opposing sides are both right and wrong at different times.
A man complains about the price of a jag while another is frozen to sleep.
They share a schizophrenic globe.
They walk along the same street.
The cons and pros are relative.
To what we take and what we give.
We're learning ourselves.
Through an unfair mess of days, we're learning our way.