The Supreme Court has simply interpreted the Consitution and stated what the law is. That's its job.
That doesn't alter the fact that the law is wrong, and sets USA back 300 years or so. It now falls to politicians to protect their people from the assinine notion that universal gun possession will rid the country of crime, or will provide protection to the law-abiding citizen, or will enable them to muster arms against the English.
Get rid of guns, and the murder rate WILL fall, I promise you. Let guns be freely available to anyone who wants them - including, now, convicted killers and lunatics, and more people will be murdered, and more people will die through accidental shootings.
A lost opportunity, I call it. No, not lost, spurned.