And to a man, they loathe the need. However, you would be shocked at the number of "unregistered" firearms in Germany and all over Europe. Guns from the war, guns from abroad, all make their way into Europe.
NY State mandated the registration of all AR and AK rifles a couple of years back. State police in NY show that less than 100 people have bothered to do so. Those people know better. Registration can lead to confiscation. Janet Reno, the erstwhile AG, actually said that the purpose of registration is eventual confiscation. No, thank you.