But that is the truth. And because no one can obey the Law, Christ came to FULFIL the Law. And in the absence of the temple in Jerusalem, you would be making a mockery of obeying the Law, since a large part of it pertains to the temple.
What is your concept of how Christ fulfilled the law? Some say that Christ didn't fulfill it at all, He ended it making all that is said of the law in Psalm 119 cancelled by the lord, erasing that Psalm from scripture. Others say Christ fulfilled every word spoken of Him in the old testament.
I know there are some things that are complete and ended because the purpose of something is fulfilled. However, the purpose of the law is to guide us to Christ, for one thing. That purpose is still useful. A purpose of the law is to guide us away from sin, and to say we are so perfect we don't sin or need guidance would be very wrong.
God told us that He gave us the law
because we all have sin. I don't think that God takes back His desire for us to repent of sin because we would be kidding ourselves if we say we don't have any. There is no verse that refutes this, but I don't think this is a reason not to give our will over to the Lord. If we do that, we must will not to sin.
If we say we give our will to Christ and will not to sin is NOT saying we are without sin.