Good idea, it's doable, although it's a bit unpractical.
Though the idea of emails being truly personal is a great argument, and could
be very convincing. I'll probably do that while keeping gmail for business
(no way I'd do that with work partners, I'd starve).
I'm also tempted by the idea of the home phone only (ditching the
smartphone). after all, I can check messages and call back.
But for now I'll accept giving my geolocation for a very useful (potentially
lifesaving tool) while looking for a better way.
But it's definitely tempting.
