I think it is OK that repos and content in general disappear. It is healthy. If somebody is caring about hosting the thing it most likely means it is healthy project. If not you shouldn't probably be using it.
This obsession with saving everything forever leads to information overload. In 20 years the github namespaces will be so full that finding good name for a project will be impossible. People often bring up social media but i think that's even worse. If you like some of photos just keep and save them yourself. I don't think it's healthy to be randomly reminded (what facebook does) about what somebody was doing 8 years ago on this day. People are unable to forget and forgive. We should allow for this to happen automatically like our memories.
This obsession with saving everything forever leads to information overload. In 20 years the github namespaces will be so full that finding good name for a project will be impossible. People often bring up social media but i think that's even worse. If you like some of photos just keep and save them yourself. I don't think it's healthy to be randomly reminded (what facebook does) about what somebody was doing 8 years ago on this day. People are unable to forget and forgive. We should allow for this to happen automatically like our memories.