Another fully-offline, sideload-only, airplane-mode-forever ebooker here. Plus I didn't even buy it in the first place - a relation had one they said they never looked at, so I asked if I could take it off their hands.

Had a funny experience once with a fellow (who was in his third year of computer science at a reputable university), where we just so happened to get on to the topic of ebooks. I told him how I operate my little machine, which I'd only started using. He was shocked, and stated clearly that he thinks it's unethical towards authors to use a "jailbroken" device like that and not get books through the Amazon store...

Sigh.