Of course God can do plenty about it; He is all-powerful. But He also wants us humans to have a choice just as the angels do. He can strike down all evildoers at once but in His mercy He wishes to give us time and space in which to repent. I already told you the only way for God to ensure that man acts in a way comforting to Him is to create man as robots or puppets but He wants us to CHOOSE good over evil for ourselves hence His gift of free will and it's impossible for there to be free will without the potential for evil. That's just the nature of the game.
Are you some type of sadist, you come up with some retarded explanation for evil, and then shrug your shoulders and say it's just a game, and them the rules, so suck it up! So GOD could have struck down Adam Lanza, but rather than show mercy to innocent 5 year old children, he preferred to show mercy to a psychotic mass murderer. You are a sadist, just like the God you worship. An omnipotent could devise it so that the potential for evil inherent in free will may be limited by means which do not impinge on that free will. God could accomplish this by making moral actions especially pleasurable, so that they would be irresistible to us; he could also punish immoral actions immediately, and make it obvious that moral rectitude is in our self-interest; or he could allow bad moral decisions to be made, but intervene to prevent the harmful consequences from actually happening. An omnipotent GOD could easily achieve this!
Some things are just plain impossible regardless of whether you are omnipotent like God, such as creating a tree so sturdy that He cannot chop it down. As much as infinite power cannot tackle what is impossible to achieve; that's the way it is so stop blaming God.
You fail to grasp the concept of omnipotent and all powerful don't you
Rather, blame the angels (especially the devil)
Oh, The Devil, for the devil to exist, he must be more powerful than GOD, for if he wasn't GOD could easily destroy him
and humans who deliberately and wickedly sinned against God.
God created humans this way, do you blame Windows 8 for crashing, or do you see the fault with the Programmer.
You're trying to pin the blame on God when the responsibility for the sins committed lies squarely with the free moral agents/creations who chose to do ill. Did anyone force them?
Typically of a religious zealot you have reduced life and complex moral decisions to a simple black and white world-view. Did Jews who were forced by NAZIS to oversee death camps and the murder of their fellow man do the right thing by participating or should they have committed suicide? Is a woman impregnated by rape committing evil by aborting the pregnancy? I could go on all day about the moral dilemmas humanity faces. The so called choice between Good and EVIL isn't so black and white as you see it
God was successful in His plan for humanity because there are MANY Christians who faithfully worship Him.
What a load of bollocks! If this was the case, the world would be a good place due to people practising Christ like actions, instead we have a world filled with War, famine, greed and poverty, mostly caused by the Religious people by the way!