Romans 2:25

New International Version (NIV)

 ²⁵ Circumcision has value if you observe the law, but if you break the law, you have become as though you had not been circumcised.

What is the goal you are after? Is it to be known as a "circumcised" believer? Or is circumcision the means to the goal of a covenant relationship with God? If you make a covenant yet don't follow it up with the effort to keep the covenant, what's the point?
Circumcision was given to Abraham as a sign of his covenant with God. His part of that covenant was to faithfully follow God. The Law was later given to his descendants so they would know what it meant to faithfully follow God and could keep their part of the covenant they had inherited. Anyone breaking the Law was breaking the covenant--and the covenant, the relationship with God, is the goal. The circumcision is only a meaningless promise without the follow-up.