Hello brother,
I must say that Christ did indeed fulfill the law, and set us free from having to keep the law. I do feel however that although we are not required to keep the law there are certain things that God said when He made the law that to this very day can be used as a benefit to the well being of our spirit, soul, and bodies. The bible says that God is the same yesterday, today, and forever. He does not change His mind concerning certain issues. The same God that said we shouldn't mark our bodies in anyway also said not to commit adultery. I will use that as an example. So if we say to ourselves that, well it really no longer matters what God said in the law, because none of that matters, then I guess really it's ok to commit adultery. You see, Israel was unable to keep the whole law, that is why Jesus fulfilled it. But at the same time there are things in the law we should take in account in our personal lives, because it is sound wisdom and is of a great benefit to us. Make sense?