Fear God for Nought?

"Then Satan answered the Lord, and said, Doth Job fear God for nought?"  Job 1:9.  The devil questioned Job's sincerity in serving the Lord.  Job had truly been blessed because of his faithfulness unto God.  "Godliness with contentment is great gain."  I Timothy 6:6.  Godliness brings what evil cannot give.  Through godliness, character remains intact.  Why would God not bless faithfulness unto Him?  God promised Israel that they would be blessed if they served Him and followed His commandments.  Deuteronomy 6:18.  So it was with Job.  Job prospered because he served God, but material prosperity was not his reason for service.  God knew why Job served Him.  The God of the universe knows the hearts of men.  God knows our motives.  The rebellious often cite hypocrisy in the lives of God's servants.  This was the reaction of Satan.  But, Satan learned that the integrity of Job could not be shaken, even though the prosperity of Job was removed.  Do we serve God for nought?