Writing

I would certainly use it, for example, if I were flying to a vacation area that would not have English language books, but I rarely do that.

A Kindle screen is less tiring than a regular computer screen, but a paper book is less tiring than a Kindle. Like many readers, I also find my concentration and recall is worse when reading electronically. Coincidentally, a young relative of mine just started middle school and is having a hell of a time retaining any information all of a sudden -- there are no textbooks in middle school, only a mish mash of stuff on a school-issued computer. A kid who was an A student is now getting Ds.

As for the huge amount of reading material for sale on Amazon, most of it is total dreck. The scam described above is only one of many; there's a reason why editors exist -- most 'authors' are little more than scribblers and should never get published. The biggest scam is that buyers are paying 2.99 for something worth nothing.