I have probably 8 or so Amazon ereaders over the years, of different models. I also use the Apple ipad, and the pdf readers on many other devices. I've bought a couple ereaders from other companies, but they didn't "take" with me. My current favorite ereader is the retina ipad, though its battery life is short.
Modern paper books have much more precise printing than books printed 20, 40, 60 years ago. I find the irregularity of the older ones rather charming, the new ones are also sterile - being too perfect.
I suppose it is like my indifference to autotuned singers. Too perfect. Doesn't sound human.
P.S. have you ever visited a medieval village in Europe? I find them wonderful, as there are no straight lines anywhere. It's all pleasingly crooked. I considered building my house slightly crooked, but that turned out to be far too expensive as everything would have to be custom made.