You don't have to deprive yourself of e-readers. I am completely happy with O'Reilly's and Pragmatic's policy (no DRM, multi-format). I am a little less happy with Manning, who makes it clear my book is only available for download for the 5 days following purchase. All of them offer DRM-free PDF as a minimum. I am so far very happy with my Nook (B&W e-paper version).
And there is also Feddbooks, which is conveniently linked from Stanza (I have it on my iPod)
Oh. And after the 1984 episode, it would be hard to convince me to buy a Kindle.