There are many other examples where the public pay for police time expended in activities which are related to only a section of the public, eg attendance at football matches or horse races. Equally, there are no other circumstances in which police time is charged to people who do not willingly engage it. It seems unlikely that people who may suffer from any mental disorders will do so at neat ten-year intervals. Because of their age, they also do not function reliably. No criminal would use this as a weapon of choice, and no useful purpose is served by registration.
Antique firearms are heirlooms.
The people who inherit these antiques now have to obtain special endorsements and attendant security at high cost. However, many have to have serial numbers engraved on them to comply with registration requirements. Furthermore, Police resources are wasted in an effort to keep track of them. This is a major waste of police resources, both in terms of human effort and computer equipment. The chances of errors creeping into the system are also disproportionately high, as each serial number on each firearm must be recorded again whenever that firearm is sold.