The thing is that the iPad screen truly doesn’t compare to e-ink in reading black-and-white books. If the e-ink screen is made properly, with high resolution and no PWM, one can read for hours on end without eye fatigue. Battery life on e-ink devices is in another league as well.

For me at least, issues with an e-ink device simply mean moving on to another device, or another manufacturer/brand, instead of switching to tablets.