There's a classic shot in the movie 2001: A Space Odyssey when the main character has to first consult instructions on how to use a zero-gravity toilet:
Imagine having to through all that!
And yet -- there is something actually worse than that.
It's the instructions on how to go about using Adobe DRMed ePub eBooks!
Here are the Zero-Gravity toilet instructions:
Now contrast the amount of text there to instructions for using Adobe DRMed ePub:
Can you imagine the poor technically unsophisticated schmo having to deal with all that?
"For God's sake, all I want to do is read eBooks!!!"
Really, it turns out it's easier to take a shit in space than to deal with Adobe DRMed ePub eBooks!