I cant remember how I found this quote (from http://www.loriswebs.com/lorispoetry/index.html) but its a classic:
Writing poetry is like giving birth. Sometimes it takes months for the seed to germinate in your head until its ready to be born; you cannot control when it will appear; you cannot force it before its time, and you cannot stop it once it decides to arrive. Sometimes the birth is painful, but it only hurts for a little while. The end result is a beautiful new creation for all your efforts.
I leave it up to others to read the poetry on the site and decide whether or not there is an argument that some poems should also be aborted.