The Decepticons' original purpose was to bring a new order to a corrupt regime on Cybertron & eliminate their society's unfair caste system. Over time, the Decepticons became more concerned with conquering Cybertron, defeating the Autobots, amassing large quantities of energon, & developing powerful weaponry. Some of these original values still stay with the Decepticons as they believe children should stay away from the war between Autobots & Decepticons. They have a huge soft spot for children.