No, I do not pick and choose - I follow the ways of the Bible and it's teachings.
There is an OT and a NT - Testament means promise. If all things were perfect under the old promise there would be no need for a new promise.
Because the laws proved to man that there is no way He could enter into Heaven on his own. It made it abundantly clear that works of man to atone for righteousness - were unattainable.
No, the atonement had to be made by Christ. He is the way to Heaven - not laws that are impossible to keep.
Romans 7:6 KJV But now we are delivered from the law, that being dead wherein we were held; that we should serve in newness of spirit, and not in the oldness of the letter.
Romans 7:6 NIV But now, dying to what once bound us, we have been released from the law so that we serve in the new way of the Spirit, and not in the old way of the written code.