If God is All Powerful, All Knowing and All Good, then?

Why is their evil in the world? Why would evil exist?

Does it mean that he is too Good to do a evil act to wipe out a Act of Evil? But the thing is, in the Bible, God has done many acts of Evil to wipe out Evil. In the past they even called him a Spiteful God, meaning that he has a dark side in him.

If God is All Powerful then his acts to remove evil, why has evil not disappeared? Could it mean that even with Gods Power evil is far stronger or at the very least weaker then people say?

Could it be that truly God's All Knowing is false? That even if he uses all of his power to try and destroy evil, he knows not if he has taken out from every nook and cranny?

Or could it mean that Evil does not exist and making and making god saving you from evil actually impossible? All things we deem a sin is evil, but if their is no Evil, then prayer and repenting is not needed, for their is no sins without evil.

So what is it really? Is God a Lesser being and part or all of his Holy Trinity is False or, is Penance is not needed as their is no sins to repent for their is no Evil?

Either way doesn't this make worshiping the Lord, illogical and unnecessary?
Added (1). Really their is mainly Two Questions, as the Others are example, correlating thought to the First Question.

Is God not really All 3 things, or is their no Evil to speak of?

and second question is

Would Worshiping be irrelevant for either choices?
Added (2). @Tim: But then their is the thing, God is limitless in power and so in sense their should be no Evil to begin with. And as such should have no reason to overcome Evil as their is none.

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