Life's a problem

A problem is, by etymology
An issue carried forward, at a loss;
A question as adherent as a flea,
And just as sharp. A problem is a cross−
A concrete charge of life-affecting doubt.
It's not some abstract intellectual game
To occupy the mind of some proud lout:
A pastime's not deserving of that name.
We all have crosses of our own to take,
Some known, some overlooked, and some bestowed;
Yet carry them we must, make no mistake,
Whether we choose to love or hate the load.
   And still there is a cross that we all share:
   The cross of life, the one we all must bear.