We are not aimless. Without craftsmen there is no a house. All things are created by Allah. All things have complexity and wonderful system. This system can be a result of A Perfect Power. If the Prophets did not be, then we wouldn't know why we live. The real world is afterlife. Allah created both good and bad. But Allah is not bad because Allah gave us choice. Allah is going to judge us in other world. Therefore Allah is fair. If you kill a fly as unfair Allah is going to judge you.