Angry with a God We Limit

I can't tell you how many times I have heard people grumble about the way the world is today. Murder, rape, theft, lies, wrong lifestyles and thoughts. The list we (including me) goes on and on.
"If God loves us so much then why does He let 'this' happen?"
"If God is all powerful then why doesn't He stop 'this' from taking place?"

"If God really can still perform miracles, why are there so many going hungry, dying, homeless??"
If, if, if -- all we do is doubt Him. Instead of questioning why God allows certain things to happen, we should be thanking Him for the gifts He has given us personally for the day we are currently in - one being that we are still ALIVE.