Your kumbaya circle-of-life post is contrived and insultingly condescending. You show no real understanding of ISIS or it's principles of activity. In the end, your post is nothing but a futile attempt at justifying the barbarity of this terrorist organization.

many people fighting for ISIS have seen their loved one's getting killed and tortured by Shiite Militas in the Iraqi civil war who have seen their loved ones getting killed and tortured under Sunnii under Saddam who have seen their loved getting killed and tortured under ... ad infinitium.

Considering the large amount of foreigners flocking to Iraq and Syria to fight in the region, this is very untrue.

A previous study showed that no less than 24 of every 26 ISIS members are from foreign countries. The study published by Long War says that ISIS fighters come from Africa, Asia, Europe, America, Tunisia, Libya, Saudi Arabia, Jordan, Syria, Iran, Pakistan, Chechnya, France, Germany and the US. Statistics show that 65 per cent of the foreign fighters are Saudi, 20 per cent are Libyan and Tunisian and 15 per cent are from various other nationalities, and that 44 per cent of ISIS' causalities are Saudi fighters.

“Syria has drawn in fighters faster than in any past conflict, including the Afghan war in the 1980s or Iraq after the Americans invaded in 2003.”

So, no. Not every fighter for ISIS has some tragic backstory filled with pain and sadness. There are more people joining ISIS than in 2003 and the 1980s, when there actually were government forces oppressing them.

By engaging in the circle of violence and giving in to your petty emotions of revenge the only thing you'll achieve is teaching the next generation that torture and murder is justifable if you just have the right reasons - and everybody believes to have to right reasons.

The indoctrination of children by ISIS will be far more damaging, most likely.

You do not treat a rabid dog with hugs and kisses. Problems like ISIS will not just magically disappear.