Natural things lack knowledge. There has to be a goal that is being achieved. We have to understand how the universe works and who is the designer? Was it God? One can argue that he was the overseer of the existence of life. Aquinas states that some intelligent being exists by whom all natural things are ordained.
The strengths of all the arguments are that there cannot be a lot of causes to any one event. The concept is very simple, there needs to be more thought to whether God really does exist. As noted, there has to be some type of being created objects in order for them to exist in the universe. Whatever ever the cause, it is, there is also an effect on the outcome.
There is a weakness in the arguments, how does God exist? There has to be a cause or an infinite number of causes to allow this to happen. With this being said then the argument cannot be true. One can say that God permits evil to happen in the world. If so, then there would be some good to come out in the end. Therefore the cause of evil is good which the effect of a specific