Being set free from the tyranny of the law is one of the best feelings a Christian can ever experience. No longer are we driven to perform. No longer are we accused by its unyielding standards and constantly found falling short of the mark. Justified by our faith in Christ alone! Does it get any better than that...I don't think so. That is the beauty of salvation.
But once saved- our inheritance (the King and His Kingdom) is to be enjoyed and needs to be enjoyed. When we enjoy God we bring glory to His name. Jesus told us He did not come to abolish the law but to fulfil it. He also told his disciples to remain in his love by obeying his commands. These commands did include the commandments given to Moses (Matt 19:18).
Jesus not only endorsed the law but he added to it a dynamic life that revealed the true heart of the commands. So why would we ever want to be found shunning the commands He lived as Old Covenant?