I do see the sense in keeping away from the internet but it isn't a real possibility for me, although I do disabled it when working on a project.
A lot of what I do is in collaboration with others and we share files via Dropbox. Also, if I didn't have an internet connection, things like remote access by PG Support would not be possible. I think it might be risky disabling Windows security updates etc.
A standalone DAW would be nice but unfortunately not an option at the moment.