My motivation? I'd think it's pretty clear. I'm offering (for those few who don't know) an options for obtaining books DRM-free and free in a landscape that has become positively shitty to any standard notion of owning the things you bought to supposedly own them. If Amazon and others want to do this, then I have no obligation to respect their DRM, and if authors want to sell their books through such a rigged format, I also shouldn't feel guilty about respecting rules against piracy.
All of this aside from very reasonable arguments that copyright shouldn't apply to consumer uses of information.
I don't really share your moral views on piracy, so why both browbeating with them?
I wasn’t browbeating. I was curious about your moral justification, and you’ve made that clear. You feel that anyone who publishes using DRM (whether they have any idea or not, or any choice or not) doesn’t deserve to be compensated for your enjoyment of their labour. You won’t boycott them or sacrifice anything, as a principled stand against this thing you object to. You’ll just read their books and not pay.
All of this aside from very reasonable arguments that copyright shouldn't apply to consumer uses of information.
I don't really share your moral views on piracy, so why both browbeating with them?