It deserves to absolutely be shot!
You don't drive a fast car at only 30 mph around the neighborhood.
You don't convince pretty girls to become nuns. (Unless they are YOUR daughter.)
You don't play rock music on the low volume settings.
And.... You don't let good guns collect dust in the safe.
As "rare" as it maybe, the collector value is very low because of the market. (The only guys who want it already bought one.) To everyone else it's just another 1911 and probably worth less than a standard one.
He should really take it out and enjoy it. (At least occasionally.)
Sic Semper Tyrannis