Does the existance of wickedness and of suffering prove that there is no God?

Recently, I've been noticing a lot of topics pertaining to religion, faith, God, etc. and have noticed that most of the responses are quite negative and confused. So, I thought I would make this topic to sort of see if I could "clear up" the confusion.

First, consider the title of this topic.

Next, consider some examples:

Does the fact that knives have been used to murder prove that no one designed them? Is the use of an aircraft to drop bombs in time of war evidence that they had no creator? Or is it rather the use to which these are being put that is causing grief to mankind?

Is it not true that much disease is a result of man's own poor living habits and his spoiling of the environment for himself and others? Are not the wars fought by humans a major cause of human suffering? Is it not also true that, while millions suffer from lack of food, there is more than enough in other lands, so that one of the underlying problems is human greed?

All of these things mentioned give evidence, not that there is no God, but that humans are misusing their abilites and the earth itself.

Thoughts? Questions? Feelings? All responses are welcome, even the nasty ones, because it makes my day when I can get a laugh out of ignorance.