If there is no law to break, that means there is no sin. The wages of sin is death Rom 6:23, so that means no law, no sin, no death. The problem with that is only God is immortal 1 Timothy 6:16 and this takes us back to the very first lie in the garden that we can sin and live, the opposite of what God said. If there was no law, there is no sin and therefore no need for grace or mercy and no need for a Savior who came to save sinners. 1 Tim 1:15 and to save us from sin Mat 1:21