EdenOne,
There are many ways of answering and analyzing this question.
People will argue on the premise: "God does not put us through tests" but "allows tests to come on us".
You said: Not stopping evil when you have the power to do so is evil in itself. Not necessarily in all cases. It depends on how much we know about the 'tests' people are facing. My cousin is currently suffering from a terminal disease with unimaginable pain. Some people around him feel that if God has unlimited power, why does he let him go through such pain? Why doesn't he heal him?
However, known to us and other family members, my cousin (never a JW) had made extreme bad choices in life (drugs, violent gangs, etc) and is now suffering from STD and a miserable life. Should God come and stop his suffering since he has the power to do so? Who is evil? God or my cousin? Is God putting him through tests of faith? or Is God allowing him to suffer the consequences of his own decisions? His JW wife is doing extremely well in taking care of him, their children, her parents, doing two jobs a day and living as a JW. All with a constant smile on her face. If you ask me, do miracles happen? Yes, what she achieves is nothing short of a miracle.It is because of her sheer willpower that he has managed to survive so long. So i feel, If God exists, then he has done a good job by not miraculously healing my brother and at the same he is doing a great job by empowering my sis-in-law to endure all this.
You can argue on this point on and on. According to me, it all depends on how much I know about the situation or the 'evil' and trying to understand why certain things we call 'evil' are happening, rather than squarely putting the entire blame on God.
We are all human beings created with a sense of proper decision making. We either suffer evil because of our own decisions or due to bad decisions taken by others. And it is up to us whether we chose to sit and cry over our misery and blame God for our suffering or stand up and try to use the 'God-given' abilities to come out of our suffering.