Phaedron,
Actually I think in previous societies it would have been a lot harder to find yourself completely isolated, because there would have been a much stronger sense of community. Everyone in your town or village would have known everyone else, and families who would have been much larger and more extensive than the nuclear family of today. Of course, if you did find yourself physically isolated, it would been almost total - whereas today at least we have telephones, the internet, and whatever. But even though we're always connected in these ways, it's a lot easier to be socially isolated in today's society than it was in the past.
Forever Vines,
I think you should try to avoid social isolation as much as possible.