But, I don't think it is biblical to stop there in our discussion of the Law, or to think the Law is bad. Calvin talked about another use for the law (he called it the 3rd use), whereas Christians are to 'delight in God's law'. The logic is simple.
1) The Law is the written transcript of God's character
2) Christians, being in Christ, are in the process of being conformed to His image
3) Therefore, as Christians grow and are conformed to Christ's image, we will naturally obey His law. We will take delight in obeying God's law in being conformed to His character. It will be a joy.
Now, it is important to separate obeying God's law out of sonship and out of legalism. Christians do not obey the law in order to be accepted by God. Our acceptance was already accomplished by Christ and rests fully in God's grace. However, we increasingly obey the law because we are in Christ, and as our nature is renewed in the Spirit, we are inclined to love God. And how do we love God, well Jesus tells us pretty clearly, "If you love me, you will keep my commandments." (John 14:15)
"And by this we know that we have come to know him, if we keep his commandments" (1 John 2:3)