I recommend that you stop registering domains and code a fingerprint lock on your domain registration workstation using the middle finger of a pizza delivery boy. Order a large cheese and when he arrives tell him you will give him a $5.00 tip if he will place his finger on the print scanning device.
You will still be able to register domains but this system will prevent impulsive registrations by requiring that you order a pizza anytime you wish to acquire a domain. Don't forget to ask for the same guy each time you order.