Terror without Cause

In the backdrop of recent suicide attack at Data Sahib, I have come to the conclusion that Pakistani suicide bombers and their handlers are terrorist without a cause. Unlike the Tamil, Palestinian, Iraqi, and Afghani suicide bombers, often citing foreign occupation as the reason behind their suicidal attacks, Pakistani suicide bombers don't even have that as an excuse. They are loose canons, criminal thugs, if you will, perpetrating terror simply for the sake of terror.