It is always good to do good, but just because something is a good thing does not always mean that it is what God wants us to do, even if we are doing it for Him and for His people. If it's not part of God's plan for us, it will not succeed to the degree it would if God’s blessing were upon it. David's desire to build a house for God was notable, but God sent the prophet to tell him it was not for him to do, because he was a man of war. What happened when Nathan informed David is a tremendous lesson for us all.