The thing that bothers me most is that people's addresses are a matter of public record, period. It's one thing to know someone has a gun license, or donated money to a political candidate, or owns a domain name.
It's another thing to reveal where they live. Sometimes people move for a good reason, and don't want someone else to be able to find them. (Abuse cases, etc.)
Other countries solve this by having ID numbers -- American SSN's are the closest. Those can be used in official documents, etc. Whereas in the US, domain names and other licenses are assigned to someone with a particular name, at a particular address, since SSN's aren't supposed to be used as general-purpose ID numbers, and what other option do you have?
It's another thing to reveal where they live. Sometimes people move for a good reason, and don't want someone else to be able to find them. (Abuse cases, etc.)
Other countries solve this by having ID numbers -- American SSN's are the closest. Those can be used in official documents, etc. Whereas in the US, domain names and other licenses are assigned to someone with a particular name, at a particular address, since SSN's aren't supposed to be used as general-purpose ID numbers, and what other option do you have?