> Depending on the registry, it's unavailable or at least against the rules for some tlds.
And yet other TLD registries are sensible enough to make privacy the default for private individuals. .EU isn't bad in this regard, and others like .SE even go so far as to hide your name (most only hide your postal, email, telephone)
Frankly I don't know why anyone who can avoid it would want to touch Verisign TLDs with a barge pole... they have the continued gall to keep putting their prices up despite more competition than ever, and fail to raise the bar on basics like whois protection. Even .UK domains can be had for $5/year with registry level whois protection for heavens sake.