There are so many argumentative subjects that you can literally browse through whole categories (just browsing this forum you will find quite a few). What is it that interests you?
General epics always seem to be Science vs Religion, political isolationism vs pre-emptive engagement, socialism vs capitalism, eugenics vs ethics, intelectual property vs open source, good environment vs more pocket money, human rights vs national security, universal healthcare vs less tax etc.
Don't cry, don't regret and don't blame
Weak find the whip, willing find freedom
Towards the sun, carry your name
In warm hands you are given
Ask the wind for the way
Uncertainty's gone, your path will unravel
Accept all as it is and do not blame
God or the Devil
~Born to Live - Mavrik~