On the other hand, it's very easy to "leak" keys into keyservers by one mistaken command with GPG. Maybe you have backup signing keys or whatever secret projec

On the other hand, it's very easy to "leak" keys into keyservers by one mistaken command with GPG. Maybe you have backup signing keys or whatever secret project encryption keys - and you would prefer for privacy and obscurity that the "public" halves are not distributed on keyservers. In this sense, I think GPG continues the culture of a more naive and smaller internet by thinking that most keys want to have their public part online.