I hear you. As we set out to design the Glowforge, we did not make the decision lightly to engineer it as a network-native device. It makes the experience better in many ways - lower cost, more powerful, and easier to use - but the flip side is that if you're not connected, you can't use it. That's a real drawback.
That said, we prefer our Dropcams to our closed circuit TVs and our Fitbits to our pedometers. We realize that some people may not like the tradeoffs we made, but we hope some folks are as excited about it as we are.