And the supreme court specifically called out in their rulings that they did not imply that it was a constitutional right to carry a concealed weapon.
That also doesn't mean it should be illegal... we've seen immense decrease in violent crimes over the past two decades -- we've also seen a dramatic shift in state laws allowing the right for people to conceal carry.
Correlation != causation and such, but science and numbers matter... They are really interesting when you review them.