The righteous man Job posed this question to his wife in the midst of his grief, pain, and suffering.  Shall we only accept good from God and not accept adversity?  It seems to me that many of us have only a partial view of who God is.  It is true that God is good.  I hear this phrase spoken from the pulpits of our churches: "God is good!" and all the church responds in unison "All the time!"  I personally don't have a huge problem with this for the Lord is good.   For the LORD is good and his love endures forever; his faithfulness continues through all generations.  His nature is good, but is He good all the time?  His motives are good, His plan is good, His ways are good but sometimes in order for God to bring about good He allows evil, calamity, or adversity to come.  I believe many of us have a view of God that God is only a God of blessing, a God of peace, a God prosperity.  We think that He will always respond to us in a way that we think He should.  We think that He should always heal us, that He will always provide for us abundantly above and beyond anything we could ever ask or think. The key word here is "always"  God does indeed do all of these things for us, He protects us, He provides for us and He heals us it is in His very name.  But, sometimes He chooses not to protect us, or to provide for us, or to heal us because there is a greater goal that He has in mind beyond our own personal plans, comfort, and enjoyment.  Some will argue that God does not make bad things happen to people only Satan does that.  Well, that is true to a point.  The Devil does come to kill, steal, and destroy no doubt.  However, the Devil can only do what God allows Him to do.  Therefore, God is still in control, in essence He gives consent for the Devil to sift you.  Why does God do this?  I thought He loved us?  I thought He is good?  It seems kind of sadistic to watch your children suffer don't you think?  If God is good all the time, why does he let the not so good into our lives?  In Job's case in the span of hours he lost, his children, his wealth, and his health.  That is a whole lot for one man to take!  It would make the best of us crumble and forsake our faith if that were to happen to us.  So why would God test Job like that?  Why would God test you and I like that?  I don't profess to know everything, but I have learned that if God does allow something to come upon me, He is going to provide the strength I need and the faith that I need to make it through.  But even so, some of you may be asking then, "Why would He even do that if He is going to help me through it?"  Why can't He just make everything perfect?

I am going to get real philosophical and theological here.  The reason God allowed evil things to persist is because God is out to prove a point.  There is an epic struggle going on the cosmic universe.  God versus Satan; Good versus Evil.  God's purpose is to receive all the glory.  That every knee should bow and every tongue confess that Jesus Christ is LORD to the glory of God the Father, those that are in Heaven and those that are in the earth and those that are under the earth.  God is out to prove to Satan and all of his followers that God is worthy of all adoration, worship, and praise.  That man kind, and The Father's heavenly angels worship Him just because of who He is.  Not because of what He does for us.  Satan charged Job with loving God because God had shown him favor and had blessed him.  Satan said this:  So Satan answered the LORD and said, “Does Job fear God for nothing? "Have You not made a hedge around him, around his household, and around all that he has on every side? You have blessed the work of his hands, and his possessions have increased in the land.   But now, stretch out Your hand and touch all that he has, and he will surely curse You to Your face!”  Later Satan said to God: "So Satan answered the LORD and said, “Skin for skin! Yes,all that a man has he will give for his life.  But stretch out Your hand now, and touch his bone and his flesh, and he will surely curse You to Your face!” 
And the LORD said to Satan, “Behold, he is in your hand, but spare his life.” 
So Satan went out from the presence of the LORD, and struck Job with painful boils from the sole of his foot to the crown of his head.  Nice guy that Satan huh?  Instigating a fight with God and dragging Job into it.  This is not a one time occurrence.  The book of Revelation gives us insight into this Satanic goading:  Then I heard a loud voice in heaven say: "Now have come the salvation and the power and the kingdom of our God, and the authority of his Christ. For the accuser of our brothers, who accuses them before our God day and night, has been hurled down.
Satan goes before the throne of God night and day accusing me and you of not being loyal and faithful to God.  He insinuates that we only serve God because He is good to us.  So to prove a point God says, to Lucifer "Behold he/she is in your hand, but spare his/her life." So Satan leaves the presence of God and then begins to attack us.  But remember God is out to prove a point.  The point He wants to prove to Satan and the whole world is that you love God just because and not because of what He does for you. 

This explains a lot doesn't it?  God knows that this is the only just way of competing for your love. 
Even God, Jesus Christ the Son of Man suffered and was tempted at all points just as we are tempted.  If  Jesus was made perfect through suffering what makes us any different for those that follow Him?  God allowed Himself to have the Job experience so that no one of us could say, "What kind of God is that?  A God that let's His children suffer?  He suffered at the hands of Satan, was beaten, scourged. and crucified to prove a point.  The point was that:  He loves us just because, not because what we can do for Him, but because He loves us. Satan, one day will face his final ending in defeat, but in the mean time God is giving an opportunity to all men everywhere to turn to Him and glorify Him for who He is.  Yes, He is good!  But sometimes we have to take the bad with the good.