It all comes down to how much your government is organized to trust it's law abiding citizens.
The laws don't apply to the criminals and terrorists because they already intend to violate laws to complete more violent crimes. The laws just make it easier for them to complete their crimes. The thing that has changed is that the anti-gun anti-lawful citizen laws clearly cannot protect citizens from escalating violence.
Recent analysis shows that the results don't really improve things for law abiding citizens in Europe. I know John Lott, and respect his work:
http://crimeresearch.org/2015/06/com...us-and-europe/
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Igitur si vis pacem, para bellum -
- Therefore if you want peace, prepare for war.