1. Strip the DRM
2. I don't find ePaper to be a problem, but I don't like reading a phone or tablet. On the other hand, every ebook I have has the spacing, margins, font and font size I want it to have - not that which fitted the format the publisher wanted or typesetter liked one day.
3. The last three I bought (on Amazon) were 1/3rd cheaper than their paperback versions.
4. Yes - biggest problem, gifting a used book is problematic, though Strip the DRM and it's not so hard to sideload them to most devices.
5. Didn't you just say that? Strip the DRM and remember not to read them or loan them out to others while your recipient is reading them.
Honestly, the industry is going to have to learn that restricting ownership rights to licensing for personal use is a dead end and a bad move that will increase piracy. Until then, I'll just buy eBooks and notionally treat them as paper books.