This indeed is a very deep thread that we all should always ponder on. Unfortunately so many individuals has lost their place an successful hight bcs of their ungratefulness, I don't know about contrary opinion but in what ever level it may occur I consider ingratitude as pride and just like the Holy book points out tha "pride goes before destruction ".
   This statement is self explanatory to all who wish to grow please be grateful and appreciate any kind gesture offered to you by anyone whether small or great bcs  every of it may simply be a  test u never can tell.