Fair enough. I've never been a book collector is all, and have vision issues and most print books the typeface simply isn't large enough for me to read.
Ebooks are a godsend to me, as is Audible.
I read PDF's converted to Kindle format on my phone and my Kindle Touch all the time but when it comes to buying stuff I want a physical product in my hand especially when it comes to books.
I've only ever bought one eBook and I regret it because I don't feel like I got my money's worth. Lol
Like you say though ebooks are fantastic for people with poor vision.